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  • 1. Adams, Rick A.
    et al.
    Moutoussis, Michael
    Nour, Matthew M.
    Dahoun, Tarik
    Lewis, Declan
    Illingworth, Benjamin
    Veronese, Mattia
    Mathys, Christoph
    de Boer, Lieke
    Guitart-Masip, Marc
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Max Planck-UCL Centre for Computational Psychiatry and Ageing Research, UK.
    Friston, Karl J.
    Howes, Oliver D.
    Roiser, Jonathan P.
    Variability in Action Selection Relates to Striatal Dopamine 2/3 Receptor Availability in Humans: A PET Neuroimaging Study Using Reinforcement Learning and Active Inference Models2020In: Cerebral Cortex, ISSN 1047-3211, E-ISSN 1460-2199, Vol. 30, no 6, p. 3573-3589Article in journal (Refereed)
    Abstract [en]

    Choosing actions that result in advantageous outcomes is a fundamental function of nervous systems. All computational decision-making models contain a mechanism that controls the variability of (or confidence in) action selection, but its neural implementation is unclear-especially in humans. We investigated this mechanism using two influential decision-making frameworks: active inference (AI) and reinforcement learning (RL). In AI, the precision (inverse variance) of beliefs about policies controls action selection variability-similar to decision 'noise' parameters in RL-and is thought to be encoded by striatal dopamine signaling. We tested this hypothesis by administering a 'go/no-go' task to 75 healthy participants, and measuring striatal dopamine 2/3 receptor (D2/3R) availability in a subset (n = 25) using [C-11]-(+)-PHNO positron emission tomography. In behavioral model comparison, RL performed best across the whole group but AI performed best in participants performing above chance levels. Limbic striatal D2/3R availability had linear relationships with AI policy precision (P = 0.029) as well as with RL irreducible decision 'noise' (P = 0.020), and this relationship with D2/3R availability was confirmed with a 'decision stochasticity' factor that aggregated across both models (P = 0.0006). These findings are consistent with occupancy of inhibitory striatal D(2/3)Rs decreasing the variability of action selection in humans.

  • 2. Adedeji, Dickson O.
    et al.
    Holleman, Jasper
    Juster, Robert-Paul
    Udeh-Momoh, Chinedu T.
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Jönköping University, Sweden.
    Hagman, Göran
    Aspö, Malin
    Adagunodo, Sofia
    Håkansson, Krister
    Kivipelto, Miia
    Solomon, Alina
    Sindi, Shireen
    Longitudinal study of Alzheimer's disease biomarkers, allostatic load, and cognition among memory clinic patients2023In: Brain, Behavior, and Immunity - Health, E-ISSN 2666-3546, Vol. 28, article id 100592Article in journal (Refereed)
    Abstract [en]

    Background: Allostatic load (AL) is defined as the cumulative dysregulation of neuroendocrine, immunological, metabolic, and cardiovascular systems that increases the susceptibility to stress-related health problems. Several dementia and Alzheimer's disease (AD) risk factors have been identified, yet little is known about the role of AL and its associations with AD biomarkers (e.g., beta-amyloid (Aβ) or tau) and cognitive function among memory clinic patients. Hence, this study aims to assess the association between AL and AD biomarkers, cognitive performance, and cognitive decline after 3-years of follow-up.

    Methods: Data from 188 memory clinic patients were derived from the Cortisol and Stress in AD (Co-STAR) study in Sweden. Participants underwent baseline assessments including blood tests for AL measures (including cortisol, thyroid stimulating hormone, cobalamin, homocysteine, leukocytes, glycated hemoglobin, albumin, high-density and low-density lipoprotein cholesterol, triglycerides, and creatinine), cerebrospinal fluid (CSF) sampling for AD biomarkers and neuropsychological tests including five cognitive domains. Linear regressions were conducted, adjusting for age, sex, and education.

    Results: Higher AL was associated with lower CSF Aβ1-42 levels (β = −0.175, p = 0.025), reflecting higher brain levels of Aβ1-42. Stratified analyses suggested a significant association among women but not men, although the AL-sex interaction was not statistically significant. AL was not significantly associated with T-tau level (β = −0.030, p = 0.682) and P-tau level (β = 0.091, p = 0.980). There were no significant associations between AL and cognition or cognitive decline after 3 years.

    Conclusion: This study showed that higher AL was associated with increased brain amyloid accumulation. This suggests that AL may play a role in AD/dementia pathophysiology. Potential sex-related differences should be assessed in further larger studies.

  • 3.
    Agahi, Neda
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Dahlberg, Lena
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Dalarna University, Sweden.
    Lennartsson, Carin
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Social integration and alcohol consumption among older people: A four-year follow-up of a Swedish national sample2019In: Drug And Alcohol Dependence, ISSN 0376-8716, E-ISSN 1879-0046, Vol. 196, p. 40-45Article in journal (Refereed)
    Abstract [en]

    Background: Today's older people drink more alcohol than earlier cohorts of older people. Social integration has been identified as an important factor for older people's drinking, but the association is complex. This study investigates both high and low levels of social integration and their associations with longitudinal patterns of alcohol consumption among older women and men.

    Methods: Longitudinal nationally representative data of older Swedish women and men aged over 65 - the Swedish Level of Living Survey (LNU) and Swedish Panel Study of Living Conditions of the Oldest Old (SWEOLD) - from 2010/2011 and 2014 (n = 1048). Associations between social contacts and social activities at baseline and longitudinal patterns of drinking frequency were examined with multinomial logistic regression analyses.

    Results: Men reported drinking alcohol more often than women, but the most common drinking frequency among both women and men was to drink monthly or less. Drinking habits were generally stable over time. People with high levels of social activity at baseline were more likely to have a stable daily or weekly drinking frequency or increased drinking frequency over the four-year follow-up period, particularly women. People with low levels of social contacts and/or social activities were less likely to have a stable daily or weekly drinking frequency, compared to people in the low and stable drinking frequency group.

    Conclusions: Alcohol consumption is embedded in a social context, older people drink in social situations and social integration predicts continued drinking patterns.

  • 4.
    Agahi, Neda
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Fors, Stefan
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Fritzell, Johan
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Shaw, Benjamin A.
    Smoking and Physical Inactivity as Predictors of Mobility Impairment During Late Life: Exploring Differential Vulnerability Across Education Level in Sweden2018In: The journals of gerontology. Series B, Psychological sciences and social sciences, ISSN 1079-5014, E-ISSN 1758-5368, Vol. 73, no 4, p. 675-683Article in journal (Refereed)
    Abstract [en]

    Objectives: To test whether older adults from high and low educational groups are differentially vulnerable to the impact of smoking and physical inactivity on the progression of mobility impairment during old age.

    Methods: A nationally representative sample of older Swedish adults (n = 1,311), aged 57-76 years at baseline (1991), were followed for up to 23 years (2014). Multilevel regression was used to estimate individual trajectories of mobility impairment over the study period and to test for differences in the progression of mobility impairment on the basis of smoking status, physical activity status, and level of education.

    Results: Compared to nonsmokers, heavy smokers had higher levels and steeper increases in mobility impairment with advancing age. However, there were only small and statistically nonsignificant differences in the impact of heavy smoking on mobility impairment in high versus low education groups. A similar pattern of results was found for physical inactivity.

    Discussion: Differential vulnerability to unhealthy behaviors may vary across populations, age, time-periods, and health outcomes. In this study of older adults in Sweden, low and high education groups did not differ significantly in their associations between heavy smoking or physical inactivity, and the progression of mobility impairment.

  • 5.
    Agahi, Neda
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Kelfve, Susanne
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Linköping University, Sweden.
    Hassing, Linda B.
    Lindwall, Magnus
    Alcohol Consumption Over the Retirement Transition in Sweden: Different Trajectories Based on Education2022In: Work, Aging and Retirement, ISSN 2054-4642, E-ISSN 2054-4650, Vol. 8, no 1, p. 74-81Article in journal (Refereed)
    Abstract [en]

    Retirement is a major life transition that involves changes to everyday routines, roles, and habits. Previous studies suggest that retirement may influence drinking habits. Many natural inhibitors of alcohol consumption disappear with the removal of work constraints. The potential impact depends on both individual and contextual factors. Women in the cohorts undergoing retirement now have been more active on the labor market, including the occupation of higher status jobs, which indicates more financial resources as well as a larger role loss after retirement. Also, the current cohorts who retire have had more liberal drinking habits throughout their lives compared to previous cohorts. We therefore examined changes in alcohol consumption surrounding retirement in different education groups among women and men undergoing retirement using annual data from the Health, Aging and Retirement Transitions in Sweden (HEARTS) study, a longitudinal national study of 60- to 66-year-olds (n = 5,913), from 2015 to 2018. Latent growth curve models were used to estimate trajectories of alcohol consumption. Results showed that those who retired during the follow-up increased their usual weekly alcohol consumption while those who worked or were retired throughout the period had stable drinking habits. Those who were retired reported the highest alcohol consumption. The increase surrounding retirement was driven by people with higher education. Women with tertiary education and men with intermediate or tertiary education increased their weekly alcohol intake after retirement, while those with low education had unchanged drinking habits. Mechanisms and motivations that may fuel increased alcohol intake among people with higher education should be further investigated.

  • 6.
    Agahi, Neda
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Kelfve, Susanne
    Stockholm University, Faculty of Social Sciences, Department of Sociology. Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Lennartsson, Carin
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Jönköping University, Sweden.
    Alcohol consumption in very old age and its association with survival: A matter of health and physical function2016In: Drug And Alcohol Dependence, ISSN 0376-8716, E-ISSN 1879-0046, Vol. 159, p. 240-245Article in journal (Refereed)
    Abstract [en]

    Background: Alcohol consumption in very old age is increasing; yet, little is known about the personal and health-related characteristics associated with different levels of alcohol consumption and the association between alcohol consumption and survival among the oldest old. Methods: Nationally representative data from the Swedish Panel Study of Living Conditions of the Oldest Old (SWEOLD, ages 76-101; n=863) collected in 2010/2011 were used. Mortality was analyzed unti12014. Alcohol consumption was measured with questions about frequency and amount. Drinks per month were calculated and categorized as abstainer, light-to-moderate drinker (0.5-30 drinks/month) and heavy drinker (>30 drinks/month). Multinomial logistic regressions and Laplace regressions were performed. Results: Compared to light-to-moderate drinkers, abstainers had lower levels of education and more functional health problems, while heavy drinkers were more often men, had higher levels of education, and no serious health or functional problems. In models adjusted only for age and sex, abstainers died earlier than drinkers. Among light-to-moderate drinkers, each additional drink/month was associated with longer survival, while among heavy drinkers, each additional drink/month was associated with shorter survival. However, after adjusting for personal and health-related factors, estimates were lower and no longer statistically significant. Conclusions: The association between alcohol consumption and survival in very old age seems to have an inverse J-shape; abstention and heavy use is associated with shorter survival compared to light-to moderate drinking. To a large extent, differences in survival are due to differences in baseline health and physical function.

  • 7.
    Agahi, Neda
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Lennartsson, Carin
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Shaw, Benjamin
    Trajectories of social activities from middle age to old age and late-life disability: a 36-year follow-up2013In: Age and Ageing, ISSN 0002-0729, E-ISSN 1468-2834, Vol. 42, no 6, p. 790-793Article in journal (Refereed)
    Abstract [en]

    Objectives: to examine the association between 34-year trajectories of social activity, from middle age to old age and late-life disability.                  

    Methods: data from the Swedish Level of Living Survey (LNU) and the Swedish Panel Study of the Oldest Old (SWEOLD) were used. LNU data from 1968, 1981, 1991 and 2000 were merged with SWEOLD data from 1992, 2002 and 2004 to create a longitudinal data set  with five observation periods. Trajectories of social activities covered 1968–2002, and late-life disability was measured  in 2004. The sample consisted of 729 individuals aged 33–61 at baseline (1968), who participated in at least four observation periods and who were free from mobility limitations at baseline. Four trajectories of social activity were identified and used as predictors of late-life disability.                  

    Results: reporting low/medium levels of social activity from mid-life to old age was the most common trajectory group. Persons reporting continuously low/medium or decreasing levels of social activity had higher odds ratios for late-life disability (OR = 2.33 and OR = 2.15, respectively) compared with those having continuously high levels of activity, even when adjusting for age, sex and mobility limitations, and excluding persons with baseline mobility limitations.                  

    Conclusions: results suggest that the disability risk associated with social activities is related to recent levels of activity, but also that risk may accumulate over time, as indicated by the higher disability risk associated with the continuously low/medium level social activity trajectory.

  • 8.
    Agahi, Neda
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Morin, Lucas
    Virtanen, Marianna
    Pentti, Jaana
    Fritzell, Johan
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Vahtera, Jussi
    Stenholm, Sari
    Heavy alcohol consumption before and after negative life events in late mid-life: longitudinal latent trajectory analyses2022In: Journal of Epidemiology and Community Health, ISSN 0143-005X, E-ISSN 1470-2738, Vol. 76, no 4, p. 360-366Article in journal (Refereed)
    Abstract [en]

    Background People who experience negative life events report more heavy alcohol consumption compared with people without these experiences, but little is known about patterns of change within this group. This study aims to identify trajectories of heavy alcohol consumption before and after experiencing either divorce, or severe illness or death in the family. Furthermore, the aim is to examine characteristics of individuals belonging to each trajectory.

    Methods Longitudinal study of public sector employees from the Finnish Retirement and Aging Study with up to 5 years of annual follow-ups (n=6783; eligible sample n=1393). Divorce and severe illness or death in the family represented negative life events. Heavy alcohol consumption was categorised as >14 units/week.

    Results Based on latent trajectory analysis, three trajectories of heavy drinking were identified both for divorce and for severe illness or death in the family: ‘No heavy drinking’ (82% illness/death, 75% divorce), ‘Constant heavy drinking’ (10% illness/death, 13% divorce) and ‘Decreasing heavy drinking’ (7% illness/death, 12% divorce). Constant heavy drinkers surrounding illness or death in the family were more likely to be men, report depression and anxiety and to smoke than those with no heavy drinking. Constant heavy drinkers surrounding divorce were also more likely to be men and to report depression compared with those with no heavy drinking.

    Conclusions Most older workers who experience divorce or severe illness or death in the family have stable drinking patterns regarding heavy alcohol consumption, that is, most do not initiate or stop heavy drinking.

  • 9.
    Agahi, Neda
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Shaw, Benjamin A.
    Smoking trajectories from midlife to old age and the development of non-life-threatening health problems: A 34-year prospective cohort study2013In: Preventive Medicine, ISSN 0091-7435, E-ISSN 1096-0260, Vol. 57, no 2, p. 107-112Article in journal (Refereed)
    Abstract [en]

    Objective. To examine how trajectories of smoking observed over a 34-year period, were associated with the progression of mobility impairment, musculoskeletal pain, and symptoms of psychological distress from midlife to old age. Method. The Swedish Level of Living Survey (LNU) and the Swedish Panel Study of the Oldest Old (SWEOLD) were merged to create a nationally representative longitudinal sample of Swedish adults (aged 30-50 at baseline; n = 1060), with four observation periods, from 1968 through 2002. Five discrete smoking trajectory groups were treated as predictors of variation in health trajectories using multilevel regression. Results. At baseline, there were no differences in mobility impairment between smoking trajectory groups. Over time all smokers, particularly persistent and former heavy smokers, exhibited faster increases in mobility problems compared with persistent non-smokers. Additionally, all smoking groups reported more pain symptoms than the non-smokers, at baseline and over time, but most of these differences did not reach statistical significance. Persistent heavy smokers reported elevated levels of psychological distress at baseline and over time. Conclusion. Smokers, and even some former smokers, who survive into old age appear to be at increased risk for non-life-threatening conditions that can diminish quality of life and increase demands for services.

  • 10.
    Agahi, Neda
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Shaw, Benjamin A.
    Fors, Stefan
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Social and economic conditions in childhood and the progression of functional health problems from midlife into old age2014In: Journal of Epidemiology and Community Health, ISSN 0143-005X, E-ISSN 1470-2738, Vol. 68, no 8, p. 734-740Article in journal (Refereed)
    Abstract [en]

    Background Childhood living conditions have been found to predict health and mortality in midlife and in old age. This study examines the associations between social and economic childhood conditions and the onset and progression of functional health problems from midlife into old age, and the extent to which potential associations are mediated by educational attainment and smoking. Methods Data from the Level of Living Survey and the Swedish Panel Study of Living Conditions of the Oldest Old were merged to create a longitudinal data set with five repeated measures from 1968 to 2004 (n=1765, aged 30-50 years and free from functional health problems at baseline). Multilevel regression models were used to analyse retrospective reports of social and economic conditions in childhood (eg, conflicts or economic problems in the family) in relation to the progression of functional health problems over the 36-year period. Results Results showed that social and economic disadvantages in childhood were associated with an earlier onset and a faster progression of functional health problems from midlife into old age. Subsequent models showed that differences in educational attainment, but not smoking, explained much of the association between childhood disadvantages and trajectories of functional health problems. Conclusions According to these results, adverse social and economic conditions in childhood affect the development of functional health problems from midlife into old age indirectly through less favourable life careers, including lower education. Creating equal opportunities for educational attainment may help reduce the long-term effects of disadvantaged childhood conditions and postpone functional health problems.

  • 11.
    Agahi, Neda
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Silverstein, Merril
    Parker, Marti G.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Late-Life and Earlier Participation in Leisure Activities: Their Importance for Survival Among Older Persons2011In: Activities, Adaptation & Aging, ISSN 0192-4788, E-ISSN 1544-4368, Vol. 35, no 3, p. 210-222Article in journal (Refereed)
    Abstract [en]

    Is activity participation in old age important for survival independent of one's earlier history of participation? A nationally representative sample of 457 older persons was followed for 25 years with data from the Level-of-Living Survey and the SWEOLD study. Cox regressions showed that regardless of earlier activities and health, late-life leisure engagement was associated with enhanced survival, especially among men. Among women, earlier activities (study groups) also seem important, perhaps by providing social networks. Results suggest that it is worthwhile to encourage elderly people to participate in leisure activities and to facilitate their participation in the community even at high ages.

  • 12.
    Agerholm, Janne
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Burström, Bo
    Schön, Pär
    Stockholm University, Faculty of Social Sciences, Department of Social Work.
    Liljas, Ann
    How did providers of home care for older adults manage the early phase of the Covid-19 pandemic? A qualitative case study of managers' experiences in Region Stockholm2023In: BMC Health Services Research, E-ISSN 1472-6963, Vol. 23, article id 1173Article in journal (Refereed)
    Abstract [en]

    Background In the spring of 2020, the Covid-19 outbreak sent a shock wave through the Swedish society and placed an extraordinary pressure on the health and social care system for older people. In the initial phase there were few guidelines for care providers to follow and staff in home care organisations often had to tackle challenges posed by the pandemic as they appeared. The aim of this study was to understand how the spread of Covid-19 was managed in organisations providing home care to older adults in different municipalities in Region Stockholm, and what actions were taken to minimise the spread of the disease among clients and staff.

    Method A descriptive qualitative study was performed based on eight interviews with managers of home care providers for older adults in three different municipalities in Region Stockholm.Three of the eight providers operate within an integrated care system. Data were analysed using conventional content analysis.

    Results Three themes were identified covering actions taken to handle the spread of the virus, feelings of insecurity and anxiety, and internal and external factors influencing how the pandemic was tackled. There was no single strategy followed by all municipalities or organisations, however, there were similarities between the organisations. One such example was the introduction of cohort care and the experience of lacking personal protective equipment. Providers in the integrated care system emphasized some advantages with their system that was seen as facilitators for minimising the risk of spreading the virus, like the joint meetings with managers from both health and social care and the close contact with healthcare professionals in relation to dissemination of hygiene instructions.

    Conclusion Social care workers providing home care to older persons are an important group in preventing dissemination of infectious diseases like Covid-19. For better readiness and preparedness for future pandemics, municipal home care services would need larger stocks of personal protective equipment, clear guidelines and more training on how to reduce dissemination of disease. Ways to achieve closer communication between health and social care providers should also be investigated.

  • 13.
    Agerholm, Janne
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Karolinska Institutet, Sweden.
    Koitzsch Jensen, Natasja
    Liljas, Ann
    Healthcare professionals' perception of barriers and facilitators for care coordination of older adults with complex care needs being discharged from hospital: A qualitative comparative study of two Nordic capitals2023In: BMC Geriatrics, E-ISSN 1471-2318, Vol. 23, no 1, article id 32Article in journal (Refereed)
    Abstract [en]

    Background The handover of older adults with complex health and social care from hospital admissions to homebased healthcare requires coordination between multiple care providers. Providing insight to the care coordination from healthcare professionals’ views is crucial to show what efforts are needed to manage patient handovers from hospitals to home care, and to identify strengths and weaknesses of the care systems in which they operate.

    Objective This is a comparative study aiming to examine healthcare professionals’ perceptions on barriers and facilitators for care coordination for older patients with complex health and social care needs being discharged from hospital in two capital cities Copenhagen (DK) and Stockholm (SE).

    Method Semi-structured interviews were conducted with 25 nurses and 2 assistant nurses involved in the coordination of the discharge process at hospitals or in the home healthcare services (Copenhagen n = 11, Stockholm n = 16). The interview guide included questions on the participants’ contributions, responsibilities, and influence on decisions during the discharge process. They were also asked about collaboration and interaction with other professionals involved in the process. The data was analysed using thematic analysis.

    Results Main themes were communication ways, organisational structures, and supplementary work by staff. We found that there were differences in the organisational structure of the two care systems in relation to integration between different actors and differences in accessibility to patient information, which influenced the coordination. Municipal discharge coordinators visiting patients at the hospital before discharge and the follow-home nurse were seen as facilitators in Copenhagen. In Stockholm the shared information system with access to patient records were lifted as a facilitator for coordination. Difficulties accessing collaborators were experienced in both settings. We also found that participants in both settings to a high degree engage in work tasks outside of their responsibilities to ensure patient safety.

    Conclusions There are lessons to be learned from both care systems. The written e-communication between hospitals and home health care runs more smoothly in Stockholm, whereas it is perceived as a one-way communication in Copenhagen. In Copenhagen there are more sector-overlapping work which might secure a safer transition from hospital to home. Participants in both settings initiated own actions to weigh out imperfections of the system.

  • 14.
    Agerholm, Janne
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Ponce de Leon, Antonio
    Schön, Pär
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Burström, Bo
    Impact of Integrated Care on the Rate of Hospitalization for Ambulatory Care Sensitive Conditions among Older Adults in Stockholm County: An Interrupted Time Series Analysis2021In: International Journal of Integrated Care, E-ISSN 1568-4156, Vol. 21, no 2, article id 22Article in journal (Refereed)
    Abstract [en]

    Introduction: Reducing avoidable hospital admissions is often viewed as a possible positive consequence of introducing integrated care (IC). The aim of this study was to investigate the impact of implementing IC in Norrtälje on the rate of admissions for ambulatory care sensitive conditions (ACSC).

    Method: Using interrupted time series analyses we investigated the effect of implementing IC in Norrtälje municipality in the northern part of Stockholm county, Sweden. The time period included 48 time points, from year 2000 to year 2011 with measurements before and after introducing IC in Norrtälje in 2006. In order to control for other extraneous events that could affect the outcome measure, but not related to the introduction of IC, we included a control population from Stockholm municipality.

    Results: After introducing IC in Norrtälje the rate of admissions for ACSC decreased. This decrease was greater in Norrtälje than in the matched control population, however the difference between the two areas was not statistically significant (p = 0.08).

    Conclusion: Introducing IC in Norrtälje may have had positive impact on admissions for ACSC for older people living in Norrtälje; however, the interpretation of the impact of IC on admissions for ACSC is complicated by intervening policy changes in health and social care during the study period. 

  • 15. Agerholm, Janne
    et al.
    Pulkki, Jutta
    Jensen, Natasja K.
    Keskimäki, Ilmo
    Andersen, Ingelise
    Burström, Bo
    Jämsen, Esa
    Tynkkynen, Liina-Kaisa
    Schön, Pär
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Liljas, Ann E. M.
    The organisation and responsibility for care for older people in Denmark, Finland and Sweden: outline and comparison of care systems2024In: Scandinavian Journal of Public Health, ISSN 1403-4948, E-ISSN 1651-1905, Vol. 52, no 2, p. 119-122Article in journal (Refereed)
    Abstract [en]

    Aim: To outline the organisation and responsibility for health and social care provided to older people in Denmark, Finland and Sweden.

    Methods: Non-quantifiable data on the care systems were collated from the literature and expert consultations. The responsibilities for primary healthcare, specialised healthcare, prevention and health promotion, rehabilitation, and social care were presented in relation to policy guidance, funding and organisation.

    Results: In all three countries, the state issues policy and to some extent co-funds the largely decentralised systems; in Denmark and Sweden the regions and municipalities organise the provision of care services – a system that is also about to be implemented in Finland to improve care coordination and make access more equal. Care for older citizens focuses to a large extent on enabling them to live independently in their own homes.

    Conclusions: Decentralised care systems are challenged by considerable local variations, possibly jeopardising care equity. State-level decision and policy makers need to be aware of these challenges and monitor developments to prevent further health and social care disparities in the ageing population.

  • 16.
    Agerholm, Janne
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Karolinska Institutet, Sweden.
    Teni, F. S.
    Sundbye, J.
    Rolfson, O.
    Burström, K.
    Patient-reported outcomes among patients undergoing total hip replacement in an integrated care system and in a standard care system in Region Stockholm, Sweden2022In: BMC Health Services Research, E-ISSN 1472-6963, Vol. 22, no 1, article id 1414Article in journal (Refereed)
    Abstract [en]

    Background: Coordination, cooperation and efficient use of resources is vital for the health- and social care sector if it is to meet the needs of an aging population. Integrated care is a patient-centred approach to provision of care aiming to improve quality of care and overcome fragmented care through co-productive partnerships and may positively affect quality of care and health outcomes, especially among those in need of highly coordinated care services.

    Aim: To compare patient-reported outcomes (PROs) among patients undergoing total hip replacement (THR) in the integrated care system in Norrtälje Municipality and in the standard care system in other municipalities in Region Stockholm, Sweden.

    Methods: Swedish Hip Arthroplasty Register PRO data during 2008–2015 were compared 1 year after THR among patients (≥50 years) in integrated care (n = 407) and standard care (n = 3501) systems using linear (EQ VAS score), logistic (EQ-5D-3L dimensions) and negative binomial (hip pain VAS score) regressions. Analyses were adjusted for the preoperative factors age, sex, BMI, ASA class and type of incision.

    Results: 1-year postoperatively, patients in the integrated care system did not report their health significantly different from patients receiving standard care. Exceptions: Female patients in integrated care reported less problems with self-care (OR:0.52; 0.29–0.96) and patients above 70 years reported more problems with mobility (OR: 1.37; 1.01–1.87).

    Conclusion: No significant differences were found between the two care systems for postoperative PROs. A longer follow-up time and analyses by socioeconomic groups would be valuable.

  • 17. Ahacic, K
    et al.
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Department of Social Work. Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Prevalence of musculoskeletal pain in the general Swedish population from 1968 to 2002: Age, period, and cohort patterns2010In: Pain, ISSN 0304-3959, E-ISSN 1872-6623, Vol. 151, no 1, p. 206-214Article in journal (Refereed)
    Abstract [en]

    We examined age, period, and cohort patterns in musculoskeletalpainprevalence between 1968 and 2002 in the Swedishpopulation. A repeated nationally representative survey allowed cross-sectional comparisons of ages 18–75 (5 waves n ≈ 5000), and ages 77+ at later waves (2 waves n ≈ 500). Cross-sectional 10-year age group differences in 5 waves, time-lag differences between waves (shifts across time) for age groups, and within-cohort differences between waves for 10-year birth cohorts followed over time were analyzed using graphs and ordered logistic regressions. The outcome scale was based on the three items measuring slight or severe pain in back, shoulder, and joints during the past 12 months. Age–period–cohort models showed that painprevalence increased with age – mild or severe at all locations. Adjusted for the age-related increase, the cohorts followed over time did not show significant period change, except for cohorts born during 1940s. Beginning with the 1940s’ cohorts painprevalence increased over the period, and after baseline later cohorts also entered adulthood and the study with a higher painprevalence. The prevalence of pain in the adult population thus increased with the passage through age and time of the 1940s cohorts. While there were no pronounced cohort differences at baseline in 1968, results demonstrated strong age effects in pain. The results indicate that the prevalence of musculoskeletalpain among the oldest age groups may increase in the future, when more baby-boomers are entering their oldest ages.

  • 18. Ahacic, Kozma
    et al.
    Damström-Thakker, Kerstin
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Recurring alcohol-related care between 1998 and 2007 among people treated for an alcohol-related disorder in 1997: a register study in Stockholm County2011In: BMC Public Health, E-ISSN 1471-2458, Vol. 11, p. 574-Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Inpatient care for alcohol intoxication is increasing in Sweden, especially among young women. Since it is well known that alcohol disorder is a chronic relapsing illness, this study examines the extent to which people return for more care.

    METHOD: All inpatients with alcohol-related diagnoses in Stockholm County during 1997 were followed prospectively to 2007 through registers. The proportion reappearing for the same diagnosis, other alcohol-related inpatient, or outpatient care each year after baseline, as well as the number of years the inpatients reappeared were calculated (n = 2735). Three diagnoses were examined separately; alcohol dependence, harmful use of alcohol, and alcohol intoxication.

    RESULTS: Three out of five inpatients with an alcohol diagnoses reappeared for more alcohol-related inpatient care during the following decade. The proportion returning was largest the year after baseline and then decreased curvilinearly over time. The inclusion of outpatient care increased proportions, but did not change patterns. Of those with an alcohol dependence diagnosis at baseline 42 percent returned for more alcohol-related inpatient care the first, 28 percent the fifth, and 25 percent the tenth year. Corresponding proportions for harmful use and intoxication were smaller. One in five among those with an alcohol dependence returned for more than five of the ten years. Ordered logistic regressions confirmed that besides diagnosis, age and gender were independently related to the number of years returning to care.

    CONCLUSIONS: While middle-aged males with alcohol dependence were in a revolving door, young female inpatients with intoxication diagnosis returned to a comparably lower degree.

  • 19. Ahacic, Kozma
    et al.
    Kennison, Robert F.
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Jönkoping University, Sweden.
    Alcohol abstinence, non-hazardous use and hazardous use a decade after alcohol-related hospitalization: registry data linked to population-based representative postal surveys2014In: BMC Public Health, E-ISSN 1471-2458, Vol. 14, p. 874-Article in journal (Refereed)
    Abstract [en]

    Background: Although there is evident association between alcohol-related hospitalization and alcohol use, the relationship has not been well examined. This study analyzed the extent of alcohol abstinence, non-hazardous use and hazardous use among people who had experienced alcohol-related hospitalization during the preceding decade. Method: Registry data concerning alcohol-related hospitalizations between 1996 and 2007 were linked to two representative surveys, in 2006 and 2007, of residents of Stockholm County. Relevant contrasts were modeled, using logistic regression, in the pooled sample (n = 54 955). Ages were 23-84 years at follow-up. Results: Among persons previously hospitalized (n = 576), half reported non-hazardous use. Non-hazardous use was less prevalent than in the general population - and the extent of non-hazardous use did not change over time following hospitalization. There were no significant age differences, but non-hazardous use was less frequent among people with repeated episodes of care. One in six was abstinent. Abstinence was more common among the old, while hazardous use (exceeding 14 drinks per week for men, and 9 drinks per week for women) decreased with age. Abstinence also increased over time; among persons hospitalized ten years ago, the abstinence rate was twice that of the general population. Associations with hazardous use over time were less conclusive. Hazardous use among those previously hospitalized decreased over time in one sample but not in the other. After pooling the data, there were indications of a decrease over time following hospitalization, but more prevalent hazardous use than in the general population. Conclusions: Following alcohol-related hospitalization, abstinence increased, and there was no evidence of regression towards the mean, i.e., towards non-hazardous use. Abstinence was also more widespread among previously hospitalized persons of older ages. With advancing age, changing hazardous alcohol habits among previously hospitalized appears to yield a trend towards promotion of abstinence.

  • 20. Ahacic, Kozma
    et al.
    Kennison, Robert F.
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Changes in sobriety in the Swedish population over three decades: age, period or cohort effects?2012In: Addiction, ISSN 0965-2140, E-ISSN 1360-0443, Vol. 107, no 4, p. 748-755Article in journal (Refereed)
    Abstract [en]

    Aims  This study aimed to examine age, cohort and period trends in alcohol abstinence.

    Design  Two surveys, the Level of Living Survey collected in 1968, 1974, 1981, 1990 and 2000, and the Swedish Panel Study of the Oldest Old (SWEOLD) collected in 1992 and 2002, were studied with graphical depictions of cross-sectional and longitudinal data presented over time and over age. Cross-sectional 10-year age group differences, time-lag differences between waves and within-cohort differences between waves for 10-year birth cohorts were examined. Logistic regression models were applied to confirm the observed patterns.

    Setting  The samples were representative of the Swedish population.

    Participants  Participants ranged in age from 18 to 75 (n = 5000 per wave), and 77+ at later waves (n = 500).

    Measurements  Alcohol abstinence was determined by asking ‘Do you ever drink wine, beer, or spirits?’, where a ‘no’ response indicated abstinence.

    Findings  Decreases in abstinence rates were observed from 1968 to 2000/02. While cross-sectional analysis indicated increased abstinence with advancing age, the longitudinal analysis suggested otherwise. Inspection of cohort differences revealed little change within cohorts and large differences between cohorts; abstinence rates declined in later-born cohorts up to the 1940s birth cohorts; stability was observed in cohorts born since the 1940s. Logistic regression models indicated that neither age nor period were significant (P > 0.05) predictors of abstinence when cohort (P < 0.001) was included.

    Conclusion  Decreasing proportions of total alcohol abstainers in Sweden from 1968 to 2000 appear to be attributable primarily to decreases in successive cohorts rather than drinkers becoming abstainers.

  • 21. Ahacic, Kozma
    et al.
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Karolinska Institute .
    Helgason, Asgeir R.
    Allebeck, Peter
    Non-response bias and hazardous alcohol use in relation to previous alcohol-related hospitalization: comparing survey responses with population data2013In: Substance Abuse Treatment, Prevention, and Policy, E-ISSN 1747-597X, Vol. 8, p. 10-Article in journal (Refereed)
    Abstract [en]

    Background: This study examines whether alcohol-related hospitalization predicts survey non-response, and evaluates whether this missing data result in biased estimates of the prevalence of hazardous alcohol use and abstinence. Methods: Registry data on alcohol-related hospitalizations during the preceding ten years were linked to two representative surveys. Population data corresponding to the surveys were derived from the Stockholm County registry. The alcohol-related hospitalization rates for survey responders were compared with the population data, and corresponding rates for non-responders were based on the differences between the two estimates. The proportions with hazardous alcohol use and abstinence were calculated separately for previously hospitalized and non-hospitalized responders, and non-responders were assumed to be similar to responders in this respect. Results: Persons with previous alcohol-related admissions were more likely currently to abstain from alcohol (RR=1.58, p<.001) or to have hazardous alcohol use (RR=2.06, p<.001). Alternatively, they were more than twice as likely to have become non-responders. Adjusting for this skewed non-response, i. e., the underrepresentation of hazardous users and abstainers among the hospitalized, made little difference to the estimated rates of hazardous use and abstinence in total. During the ten-year period 1.7% of the population were hospitalized. Conclusions: Few people receive alcohol-related hospital care and it remains unclear whether this group's underrepresentation in surveys is generalizable to other groups, such as hazardous users. While people with severe alcohol problems - i.e. a history of alcohol-related hospitalizations -are less likely to respond to population surveys, this particular bias is not likely to alter prevalence estimates of hazardous use.

  • 22. Ahacic, Kozma
    et al.
    Trygged, Sven
    Stockholm University, Faculty of Social Sciences, Department of Social Work.
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Income and Education as Predictors of Stroke Mortality after the Survival of a First Stroke2012In: Stroke Research and Treatment, ISSN 2090-8105, E-ISSN 2042-0056, Vol. 2012, article id 983145Article in journal (Refereed)
    Abstract [en]

    Background. It is well known that socioeconomic indicators, such as income and education, predict both stroke incidence and stroke mortality. This means that persons in lower socioeconomic positions are less likely to survive their stroke, and there will be a selective survival in the group discharged from hospital after their first stroke. Question. Does socioeconomic position continue to predict mortality, stroke specific, or from other causes, among patients surviving their first stroke in spite of this selective survival? Methods. All persons in Sweden aged 40–59 years who were discharged after a first hospitalization for stroke in 1996–2000 were included (n = 10,487), then followed up until the end of the fourth calendar year after discharge. Data were analysed with Cox regressions controlling for age, sex, and stroke type. Results. Persons with high socioeconomic position, measured by education and income, have lower mortality than those of low position. Education was not significant when adjusted for income, however. The risk of dying was similar for stroke-specific mortality and all-cause mortality, for those with cerebral infarction as well as for all patients. Conclusions. Socioeconomic position predicted stroke-specific mortality also in the selective group of persons who survived their first stroke.

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  • 23. Ahlner, Felicia
    et al.
    Erhag, Hanna Falk
    Johansson, Lena
    Fässberg, Madeleine Mellqvist
    Sterner, Therese Rydberg
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). University of Gothenburg, Sweden.
    Samuelsson, Jessica
    Zettergren, Anna
    Waern, Margda
    Skoog, Ingmar
    Patterns of Alcohol Consumption and Associated Factors in a Population-Based Sample of 70-Year-Olds: Data from the Gothenburg H70 Birth Cohort Study 2014–162022In: International Journal of Environmental Research and Public Health, ISSN 1661-7827, E-ISSN 1660-4601, Vol. 19, no 14, article id 8248Article in journal (Refereed)
    Abstract [en]

    Older adults of today consume more alcohol, yet knowledge about the factors associated with different consumption levels is limited in this age group. Based on the data from a population-based sample (n = 1156, 539 men and 617 women) in The Gothenburg H70 Birth Cohort Study 2014–16, we examined sociodemographic, social, and health-related factors associated with alcohol consumption levels in 70-year-olds, using logistic regression. Total weekly alcohol intake was calculated based on the self-reported amount of alcohol consumed. Alcohol consumption was categorized as lifetime abstention, former drinking, moderate consumption (≤98 g/week), and at-risk consumption (>98 g/week). At-risk consumption was further categorized into lower at-risk (98–196 g/week), medium at-risk (196–350 g/week), and higher at-risk (≥350 g/week). We found that among the 1156 participants, 3% were lifetime abstainers, 3% were former drinkers, 64% were moderate drinkers, and 30% were at-risk drinkers (20% lower, 8% medium, 2% higher). Among several factors, former drinking was associated with worse general self-rated health (OR 1.65, 95% CI 1.08–2.51) and lower health-related quality of life (measured by physical component score) (OR 0.94, 95% CI 0.91–0.97), higher illness burden (OR 1.16, 95% CI 1.07–1.27), and weaker grip strength (OR 0.96, 95% CI 0.94–0.98). Higher at-risk drinkers more often had liver disease (OR 11.41, 95% CI 3.48–37.37) and minor depression (OR 4.57, 95% CI 1.40–14.95), but less contacts with health care (OR 0.32, 95% CI 0.11–0.92). Our findings demonstrate the importance of classifications beyond abstinence and at-risk consumption, with implications for both the prevention and clinical management of unhealthy consumption patterns in older adults.

  • 24. Akenine, Ulrika
    et al.
    Barbera, Mariagnese
    Beishuizen, Cathrien R. L.
    Pour, Mandana Fallah
    Guillemont, Juliette
    Rosenberg, Anna
    Coley, Nicola
    Mangialasche, Francesca
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Karolinska Institutet, Sweden.
    Salo, Lotta
    Savy, Stephanie
    Pols, A. Jeannette
    Andrieu, Sandrine
    Richard, Edo
    Soininen, Hilkka
    van Charante, Eric Moll
    Kivipelto, Miia
    Attitudes of at-risk older adults about prevention of cardiovascular disease and dementia using eHealth: a qualitative study in a European context2020In: BMJ Open, E-ISSN 2044-6055, Vol. 10, no 8, article id e037050Article in journal (Refereed)
    Abstract [en]

    Objectives Prevention of cardiovascular disease (CVD) and dementia is a key health priority among older adults. Understanding individuals’ attitudes to, the prevention of these conditions, particularly when delivered through novel eHealth tools, could help in designing effective prevention programmes. The aim of the study was to explore the attitudes of older adults at increased risk of CVD and dementia regarding engagement in eHealth self-management prevention programmes, and to describe the facilitators and barriers.

    Design A qualitative research approach was used. Data were collected through eight focus groups in Finland, France and the Netherlands. Data were analysed following the principles of grounded theory.

    Setting and participants Forty-four community-dwellers aged 65+ at risk of CVD were recruited from a previous trial cohort in Finland, and through general practices in France and the Netherlands.

    Results The study identified three categories: access to reliable information, trust in the healthcare providers and burden and stigma of dementia. A core category was also identified: the interactive process of the three categories influencing engagement in self-management prevention programme. The categories were interconnected through an interactive process and influenced by the local healthcare culture and context which shaped them differently, becoming either facilitators or barriers to engage in eHealth self-management prevention programmes.

    Conclusions The study emphasises the importance of considering the interactions between the identified categories in this study, grounded in the local healthcare culture and context in further developments of eHealth self-management interventions that aim to prevent CVD and dementia.

  • 25.
    Akugizibwe, Roselyne
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Calderón-Larrañaga, Amaia
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Roso-Llorach, Albert
    Onder, Graziano
    Marengoni, Alessandra
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). University of Brescia, Italy.
    Zucchelli, Alberto
    Rizzuto, Debora
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm Gerontology Research Centrum, Sweden.
    Vetrano, Davide L.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Italy; Università Cattolica del Sacro Cuore, Italy.
    Multimorbidity Patterns and Unplanned Hospitalisation in a Cohort of Older Adults2020In: Journal of Clinical Medicine, E-ISSN 2077-0383, Vol. 9, no 12, article id 4001Article in journal (Refereed)
    Abstract [en]

    The presence of multiple chronic conditions (i.e., multimorbidity) increases the risk of hospitalisation in older adults. We aimed to examine the association between different multimorbidity patterns and unplanned hospitalisations over 5 years. To that end, 2,250 community-dwelling individuals aged 60 years and older from the Swedish National Study on Aging and Care in Kungsholmen (SNAC-K) were studied. Participants were grouped into six multimorbidity patterns using a fuzzy c-means cluster analysis. The associations between patterns and outcomes were tested using Cox models and negative binomial models. After 5 years, 937 (41.6%) participants experienced at least one unplanned hospitalisation. Compared to participants in the unspecific multimorbidity pattern, those in the cardiovascular diseases, anaemia and dementia pattern, the psychiatric disorders pattern and the metabolic and sleep disorders pattern presented with a higher hazard of first unplanned hospitalisation (hazard ratio range: 1.49-2.05; p < 0.05 for all), number of unplanned hospitalisations (incidence rate ratio (IRR) range: 1.89-2.44; p < 0.05 for all), in-hospital days (IRR range: 1.91-3.61; p < 0.05 for all), and 30-day unplanned readmissions (IRR range: 2.94-3.65; p < 0.05 for all). Different multimorbidity patterns displayed a differential association with unplanned hospital care utilisation. These findings call for a careful primary care follow-up of older adults with complex multimorbidity patterns.

  • 26. Al-Adhami, Maissa
    et al.
    Berglund, Erik
    Wångdahl, Josefin
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Uppsala University, Sweden.
    Salari, Raziye
    A cross-sectional study of health and well-being among newly settled refugee migrants in Sweden–The role of health literacy, social support and self-efficacy2022In: PLOS ONE, E-ISSN 1932-6203, Vol. 17, no 12, article id e0279397Article in journal (Refereed)
    Abstract [en]

    Structural barriers such as inadequate housing, lack of employment opportunities, and discrimination are known to adversely affect the health of newly settled refugee migrants. However, these barriers remain largely unresolved and unaddressed. Thus, there is a need to better understand how other factors, such as individual-level health resources, may influence health and mitigate ill health in the early post-migration phase. In this study, we aimed to explore the relationship between health outcomes and individual health resources including health literacy, social support, and self-efficacy in newly settled refugee migrants. Survey data was collected from 787 refugee migrants in Sweden. Logistical regression analysis showed that limited health literacy, lack of emotional support, and low self-efficacy were consistently associated with poor health outcomes. Demographic variables such as gender, education, and type of residence permit were not as imperative. Individual-level health resources may play an important role in the general and psychological well-being of newly settled migrants. Promoting health literacy and facilitating the attainment of social support may buffer for structural challenges in the establishment phase and enhance the prospects of later health and social integration.

  • 27. Al-Adhami, Maissa
    et al.
    Durbeej, Natalie
    Daryani, Achraf
    Wångdahl, Josefin
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm Univ, Tomtebodavagen 18 A, S-17165 Stockholm, Sweden.
    Larsson, Elin C.
    Salari, Raziye
    Can extended health communication improve newly settled refugees' health literacy? A quasi-experimental study from Sweden2024In: Health Promotion International, ISSN 0957-4824, E-ISSN 1460-2245, Vol. 39, no 2, article id daae015Article in journal (Refereed)
    Abstract [en]

    Structural and contextual factors such as limited work and housing opportunities negatively affect the health and well-being of newly settled refugee migrants in receiving high-income countries. Health promotion initiatives aiming at strengthening health and integration have been tried out within the Swedish Introduction program for refugee migrants. However, longitudinal evaluations of these interventions are rare. The aim of the current study was to compare the effectiveness of a regular and an extended civic orientation course with added health communication and examine whether the latter would improve self-rated health and psychological well-being, health literacy and social capital among newly settled refugee migrants in Sweden. Pre- and post-assessment questionnaires were collected from the intervention group receiving the extended course (n = 143) and a control group receiving the regular course (n = 173). Linear mixed models and chi-square analyses showed a significant increase with a small effect size (0.21) in health literacy in the intervention group. However, there were no significant changes in emotional and practical support, general self-rated health or psychological well-being. The findings indicate that added health communication provided embedded in the civic orientation course can increase health literacy. However, further longitudinal studies are needed to confirm the sustainability of the observed effect and examine whether these short-term improvements in health literacy translate to long-term advances in health and integration.

  • 28. Al-Adhami, Maissa
    et al.
    Wångdahl, Josefin
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Uppsala University, Sweden.
    Salari, Raziye
    Åkerman, Eva
    ”Putting words to their feelings”– civic communicators’ perceptions and experiences of an in-depth course on mental health for newly settled refugee migrants in Sweden2023In: BMC Health Services Research, E-ISSN 1472-6963, Vol. 23, no 1, article id 510Article in journal (Refereed)
    Abstract [en]

    Background Newly settled refugee migrants face psychological stressors stemming from pre-, during- and post-migration experiences. In Sweden, mental health promotion is part of the health module in the civic orientation classes for newly settled refugee migrants. Training courses are offered to civic communicators and workshop leaders to facilitate communication about mental health; however, the training is seldom evaluated. In the current study, we aim to explore civic communicators’ perceptions and experiences of an in-depth mental health training course in relation to observed needs among newly settled refugee migrants.

    Method We interviewed ten civic communicators that had partaken in the in-depth training course on mental health. All respondents had prior migratory experience and worked as civic communicators in their native languages. The interviews were semi-structured and data were analyzed using thematic analysis.

    Results Three themes were identified: (1) Intertwined mental health needs related to migration, (2) Multi-layered barriers to addressing mental health, and (3) Becoming aware of the mental health journey. One overarching theme was arrived at through synthesizing the three themes ‘Acquired new tools to lead reflective conversations about mental health and well-being’.

    Conclusion The in-depth mental health training course led to the attainment of new knowledge and new tools enabling civic communicators to lead reflective conversations about mental health and well-being with newly settled refugee migrants. Mental health needs were related to pre- and post-migration experiences. Barriers to talking about mental health included stigma and a lack of arenas to promote the mental health of refugee migrants. Increasing knowledge among civic communicators can facilitate the promotion of mental self-help capacity and resilience among newly settled refugee migrants.

  • 29. Alakurtti, Kati
    et al.
    Johansson, Jarkko J.
    Joutsa, Juho
    Laine, Matti
    Bäckman, Lars
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Nyberg, Lars
    Rinne, Juha O.
    Long-term test-retest reliability of striatal and extrastriatal dopamine D-2/3 receptor binding: study with [C-11]raclopride and high-resolution PET2015In: Journal of Cerebral Blood Flow and Metabolism, ISSN 0271-678X, E-ISSN 1559-7016, Vol. 35, no 7, p. 1199-1205Article in journal (Refereed)
    Abstract [en]

    We measured the long-term test-retest reliability of [C-11]raclopride binding in striatal subregions, the thalamus and the cortex using the bolus-plus-infusion method and a high-resolution positron emission scanner. Seven healthy male volunteers underwent two positron emission tomography (PET) [C-11]raclopride assessments, with a 5-week retest interval. D-2/3 receptor availability was quantified as binding potential using the simplified reference tissue model. Absolute variability (VAR) and intraclass correlation coefficient (ICC) values indicated very good reproducibility for the striatum and were 4.5%/0.82, 3.9%/0.83, and 3.9%/0.82, for the caudate nucleus, putamen, and ventral striatum, respectively. Thalamic reliability was also very good, with VAR of 3.7% and ICC of 0.92. Test-retest data for cortical areas showed good to moderate reproducibility (6.1% to 13.1%). Our results are in line with previous test-retest studies of [C-11]raclopride binding in the striatum. A novel finding is the relatively low variability of [C-11]raclopride binding, providing suggestive evidence that extrastriatal D-2/3 binding can be studied in vivo with [C-11]raclopride PET to be verified in future studies.

  • 30. Aljeaidi, Muhamad
    et al.
    Keen, Claire
    Bell, J. Simon
    Cooper, Tina
    Robson, Leonie
    Tan, Edwin C. K.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm University, Faculty of Social Sciences, Department of Psychology, Stress Research Institute. Monash University, Australia; The University of Sydney, Australia.
    Dry Eyes, Ocular Lubricants, and Use of Systemic Medications Known or Suspected to Cause Dry Eyes in Residents of Aged Care Services2020In: International Journal of Environmental Research and Public Health, ISSN 1661-7827, E-ISSN 1660-4601, Vol. 17, no 15, article id 5349Article in journal (Refereed)
    Abstract [en]

    Ocular issues are common, burdensome, and under-researched among residents of aged care services. This study aims to investigate the prevalence of dry eyes or use of ocular lubricants among residents, and the possible association with systemic medications known or suspected to cause dry eyes. A cross-sectional study of 383 residents of six aged care services in South Australia was conducted. Data were extracted from participants' medical histories, medication charts, and validated assessments. The main exposure was systemic medications known to cause, contribute to, or aggravate dry eyes. The primary outcome was documented dry eyes or regular administration of ocular lubricants. Logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for the association between systemic medications and dry eyes/use of ocular lubricants. Dry eyes were documented for 53 (13.8%) residents and 98 (25.6%) residents were administered ocular lubricants. Overall, 116 (30.3%) residents had documented dry eyes/used ocular lubricants. Of these, half (n= 58) were taking a medication known to cause, contribute to, or aggravate dry eyes. Taking one or more medications listed as known to cause dry eyes was associated with having dry eyes/use of ocular lubricants (OR 1.83, 95% CI 1.15-2.94). In sub-analyses, no individual medication was associated with dry eyes/use of ocular lubricants. Dry eyes and use of ocular lubricants are common in residential aged care. Our hypothesis generating findings suggest the need for further research into the clinical significance of systemic medications as a possible cause of dry eyes.

  • 31. Aljeaidi, Muhamad S.
    et al.
    Tan, Edwin C. K.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm University, Faculty of Social Sciences, Department of Psychology, Stress Research Institute. The University of Sydney, Australia; Monash University, Australia .
    The association between polypharmacy and cognitive ability in older adults: A national cohort study2022In: Research in Social and Administrative Pharmacy, ISSN 1551-7411, E-ISSN 1934-8150, Vol. 18, no 3, p. 2505-2509Article in journal (Refereed)
    Abstract [en]

    Background: Polypharmacy, the use of multiple medications by one individual, may be associated with adverse health outcomes including poor cognition. However, it remains unclear whether a longitudinal relationship exists.

    Objectives: To investigate the association between polypharmacy and 3-year cognitive ability in older adults.

    Methods: A longitudinal cohort study of older adults 65 years and older, residing in the community, who participated in waves 12 (2012), 13 (2013) and 16 (2016) of the Household Income and Labour Dynamics (HILDA) Survey was conducted. Polypharmacy was defined as the regular use of 5 or more prescription medications. Cognitive ability was assessed using backwards digit span test (BDS), 25-item version of the National Adult Reading Test (NART-25) and symbol-digit modalities test (SDM). Linear regression was used to test the longitudinal association between polypharmacy and cognitive test scores at 3 years. All analyses were adjusted for age, sex, education, comorbidities, socioeconomic and lifestyle factors, and baseline cognitive test scores.

    Results: A total of 2141 participants (mean age 72.9 years, 54.4% female) were included in the study sample. Polypharmacy was present in 27.3%. After adjusting for potential confounders, polypharmacy was negatively associated with cognitive ability at 3 years: BDS: −0.067 (95% CI = −0.353 to −0.051), NART-25: −0.071 (95% CI = −1.428 to −0.294), SDM: −0.073 (95% CI = −2.960 to −0.696).

    Conclusion: Polypharmacy was associated with poorer cognitive ability at 3 years, even after adjusting for comorbidities and other confounders. Future research should consider the long-term impact of polypharmacy on cognitive ability, and identify strategies to optimise medication use and cognition in older adults.

  • 32.
    Allers, Katharina
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Carl von Ossietzky University of Oldenburg, Germany.
    Calderón-Larrañaga, Amaia
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Fors, Stefan
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Morin, Lucas
    Socioeconomic position and risk of unplanned hospitalization among nursing home residents: a nationwide cohort study2021In: European Journal of Public Health, ISSN 1101-1262, E-ISSN 1464-360X, Vol. 31, no 3, p. 467-473Article in journal (Refereed)
    Abstract [en]

    Background: Socioeconomic inequalities in health and healthcare use in old age have been on the rise during the past two decades. So far, it is unknown whether these inequalities have permeated the nursing home setting. This study aimed to assess whether the socioeconomic position of newly admitted nursing home residents had an influence on their risk of unplanned hospitalization. Methods: We identified older persons (similar to 75 years) who were newly admitted to a nursing home between March 2013 and December 2014 using a set of linked routinely collected administrative and healthcare data in Sweden. The number of unplanned hospitalizations for any cause and the cumulative length of stay were defined as primary outcomes. Unplanned hospitalizations for potentially avoidable causes (i.e. fall-related injuries, urinary tract infections, pneumonia and decubitus ulcers) were considered as our secondary outcome. Results: Among 40 545 newly admitted nursing home residents (mean age 86.8 years), the incidence rate of unplanned hospitalization ranged from 53.9 per 100 person-years among residents with tertiary education up to 55.1 among those with primary education. After adjusting for relevant confounders, we observed no meaningful difference in the risk of unplanned hospitalization according to the education level of nursing home residents (IRR for tertiary vs. primary education: 0.96, 95% CI 0.92-1.00) or to their level of income (IRR for highest vs. lowest quartile of income: 0.98, 0.95-1.02). There were also no differences in the cumulative length of hospital stays or in the risk of experiencing unplanned hospitalizations for potentially avoidable causes. Conclusions: In sum, in this large cohort of newly admitted nursing home residents, we found no evidence of socioeconomic inequalities in the risk of unplanned hospitalization.

  • 33. Almborg, Ann-Helene
    et al.
    Welmer, Anna-Karin
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Use of the international classification of functioning, disability and health (ICF) in social services for elderly in Sweden2012In: Disability and Rehabilitation, ISSN 0963-8288, E-ISSN 1464-5165, Vol. 34, no 11, p. 959-964Article in journal (Refereed)
    Abstract [en]

    Purpose: To examine the content of health information in acts of social services of elderly people in relation to the International Classification of Functioning, Disability and Health (ICF) and to describe the health information in the different parts of the acts according to the ICF.

    Method: Health information of 25 acts from four municipalities was analysed and the concepts were linked to ICF codes, using the established coding rules.

    Results: The health information consisted of 372 concepts, which were linked to 122 specific ICF codes. The concepts in the acts were mostly linked to the ICF component Activities and Participation, except for the current functioning concepts where the ICF component Body functions was the most frequent. The 3rd level was most frequent in Activities and Participation and in Environmental factors, and the 2nd level was most frequent in Body functions.

    Conclusions: The ICF covers the concepts and terms contained in the acts to a large extent. Furthermore, the results show that the ICF codes differ in the different parts of the acts. The ICF provides a coherent and structured documentation, which contributes to a legally secure assessment of assistance. The selection of ICF codes can be used in development of “code sets” for social services for elderly.

  • 34. Amrouch, Cheima
    et al.
    Amrouch, Souad
    Dai, Lu
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Calderón-Larrañaga, Amaia
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm Gerontology Research Center, Sweden.
    Wastesson, Jonas W.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm University, Faculty of Social Sciences, Department of Public Health Sciences.
    Johnell, Kristina
    Liborio Vetrano, Davide
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm Gerontology Research Center, Sweden.
    De Smedt, Delphine
    Petrovic, Mirko
    Applicability of STOPP/START prescribing criteria in integrated Swedish administrative health registries and a Swedish population-based cohort2024In: European Geriatric Medicine, ISSN 1878-7649, E-ISSN 1878-7657Article in journal (Refereed)
    Abstract [en]

    Purpose The STOPP/START criteria are frequently applied in observational studies to assess potentially inappropriate prescribing in older adults. This study aimed to assess the applicability of the three available STOPP/START versions in two distinct data sources.

    Methods To evaluate the applicability of the three versions of STOPP/START criteria, we used two observational data sources: (i) Integrated Swedish administrative health registries (ISHR) encompassing routinely collected health data and (ii) the population-based Swedish National study on Aging and Care in Kungsholmen (SNAC-K), based on health professional-led clinical assessments. The Anatomical Therapeutic Classification code (ATC) was used to categorise medications. Diseases were categorised using the international classification of diseases version 10 (ICD10).

    Results The first STOPP/START version demonstrated an applicability rate of 80% in ISHR and 84% in SNAC-K. The second version demonstrated an applicability of 64% in ISHR and 74% in SNAC-K. The third version showed an applicability of 66% in ISHR and 77% in SNAC-K. Challenges in applicability included broad definitions, vague terminology, and the lack of information on disease severity, symptomatic traits, and stability of certain conditions.

    Conclusion The applicability of the STOPP/START criteria in observational studies seems to have decreased in more recent versions of the tool. Population-based studies with comprehensive clinical assessments may offer higher applicability compared to studies based on administrative data. Future versions of the STOPP/START criteria should prioritise clear and unambiguous definitions to improve their applicability in research and promote result generalisability and comparability.

  • 35. Amrouch, Cheima
    et al.
    Vauterin, Delphine
    Amrouch, Souad
    Grymonprez, Maxim
    Dai, Lu
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Damiano, Cecilia
    Calderón-Larrañaga, Amaia
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm Gerontology Research Center, Sweden.
    Lahousse, Lies
    De Bacquer, Dirk
    Lip, Gregory Y. H.
    Vetrano, Davide L.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm Gerontology Research Center, Sweden.
    De Smedt, Delphine
    Petrovic, Mirko
    Potentially inappropriate prescribing in multimorbid and polymedicated older adults with AF: A Systematic Review and Meta-Analysis2024In: Drugs & Aging, ISSN 1170-229X, E-ISSN 1179-1969, Vol. 41, p. 13-30Article, review/survey (Refereed)
    Abstract [en]

    Aim Polypharmacy in multimorbid older patients with atrial fibrillation (AF) is a risk factor for potentially inappropriate prescribing (PIP). We aimed to systematically assess the evidence on the prevalence of PIP and its impact on adverse health outcomes in this patient group.

    Methods A systematic search of the published peer-reviewed literature describing the prevalence of PIP and/or its association with adverse health outcomes in multimorbid (AF plus one comorbidity) and polymedicated (≥ 2 drugs) adults ≥ 65 years was done up to March 2023. A meta-analysis of the prevalence of PIP of (direct) oral anticoagulants ((D)OACs) was conducted using a random-effects model. Leave-one-out analysis was performed with R (version 4.2.2) and RStudio (version 2022.12.0+353).

    Results Of the 12 studies included, only one reported on the prevalence of overall PIP (65%). The meta-analysis of 10 studies assessing PIP of (D)OACs produced a pooled prevalence [95% confidence interval (CI)] of 35% [30–40%], with significant heterogeneity between the included studies (I2 95%). No statistically significant association was reported in three studies between PIP of (D)OACs, cardiovascular (CV) and all-cause mortality, hospital readmission, CV hospitalisation and stroke. Reported associations between PIP and major bleeding differed, with one study demonstrating a significant association (odds ratio 2.17; 95% CI 1.14–4.12) and the other study not showing such association.

    Conclusion This systematic review highlights the scarce evidence regarding the prevalence of PIP and its association with adverse health outcomes in multimorbid older adults with AF. Large, prospective and better-designed studies are needed.

  • 36. Andel, Ross
    et al.
    Crowe, Michael
    Feychting, Maria
    Pedersen, Nancy L.
    Fratiglioni, Laura
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Johansson, Boo
    Gatz, Margaret
    Work-Related Exposure to Extremely Low-Frequency Magnetic Fields and Dementia: Results from the Population-Based Study of Dementia in Swedish Twins2010In: The journals of gerontology. Series A, Biological sciences and medical sciences, ISSN 1079-5006, E-ISSN 1758-535X, Vol. 65A, no 11, p. 1220-1227Article in journal (Refereed)
    Abstract [en]

    Background. We examined the association between extremely low-frequency magnetic fields (EMF) and the risk of dementia and Alzheimer’s disease using all 9,508 individuals from the Study of Dementia in Swedish Twins (HARMONY) with valid occupational and diagnostic data.

    Methods. Dementia diagnoses were based on telephone screening followed by in-person clinical workup. Main lifetime occupation was coded according to an established EMF exposure matrix. Covariates were age, gender, education, vascular risk factors, and complexity of work. Based on previous research, data were also analyzed separately for cases with disease onset by age 75 years versus later, men versus women, and those with manual versus nonmanual main occupation. We used generalized estimating equations with the entire sample (to adjust for the inclusion of complete twin pairs) and conditional logistic regression with complete twin pairs only.

    Results. Level of EMF exposure was not significantly associated with dementia or Alzheimer’s disease. However, in stratified analyses, medium and high levels of EMF exposure were associated with increased dementia risk compared with low level in cases with onset by age 75 years (odds ratio: 1.94, 95% confidence interval: 1.07–3.65 for medium, odds ratio: 2.01, 95% confidence interval: 1.10–3.65 for high) and in participants with manual occupations (odds ratio: 1.81, 95% confidence interval: 1.06–3.09 for medium, odds ratio: 1.75, 95% confidence interval: 1.00–3.05 for high). Results with 42 twin pairs discordant for dementia did not reach statistical significance.

    Conclusions. Occupational EMF exposure appears relevant primarily to dementia with an earlier onset and among former manual workers.

  • 37. Andel, Ross
    et al.
    Crowe, Michael
    Hahn, Elizabeth A.
    Mortimer, James
    Pedersen, Nancy L.
    Fratiglioni, Laura
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Johansson, Boo
    Gatz, Margaret
    Work-Related Stress May Increase the Risk of Vascular Dementia2012In: Journal of The American Geriatrics Society, ISSN 0002-8614, E-ISSN 1532-5415, Vol. 60, no 1, p. 60-67Article in journal (Refereed)
    Abstract [en]

    OBJECTIVES: To examine job control, job demands, social support at work, and job strain (ratio of demands to control) in relation to risk of any dementia, Alzheimer's disease (AD), and vascular dementia (VaD). DESIGN: Cohort study. SETTING: The population-based Study of Dementia in Swedish Twins. PARTICIPANTS: Two hundred fifty-seven people with dementia (167 AD, 46 VaD) and 9,849 without. MEASUREMENTS: Dementia diagnoses were based on telephone screening for cognitive impairment followed by in-person clinical examination. An established job exposure matrix was matched to main occupation categories to measure work characteristics. RESULTS: In generalized estimating equations (adjusted for the inclusion of complete twin pairs), lower job control was associated with greater risk of any dementia (odds ratio (OR) = 1.17, 95% confidence interval (CI) = 1.04-1.31) and VaD specifically (OR = 1.39, 95% CI = 1.07-1.81). Lower social support at work was associated with greater risk of dementia (OR = 1.15, 95% CI = 1.03-1.28), AD (OR = 1.14, 95% CI = 1.00-1.31), and VaD (OR = 1.28, 95% CI = 1.02-1.60). Greater job strain was associated with greater risk of VaD only (OR = 1.28, 95% CI = 1.02-1.60), especially in combination with low social support (OR = 1.35, 95% CI = 1.11-1.64). Age, sex, and education were controlled for. Work complexity, manual work, and vascular disease did not explain the results. No differences in work-related stress scores were observed in the 54 twin pairs discordant for dementia, although only two pairs included a twin with VaD. CONCLUSION: Work-related stress, including low job control and low social support at work, may increase the risk of dementia, particularly VaD. Modification to work environment, including attention to social context and provision of meaningful roles for employees, may contribute to efforts to promote cognitive health.

  • 38. Andel, Ross
    et al.
    Crowe, Michael
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Wastesson, Jonas
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Parker, Marti G.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Indicators of Job Strain at Midlife and Cognitive Functioning in Advanced Old Age2011In: The journals of gerontology. Series B, Psychological sciences and social sciences, ISSN 1079-5014, E-ISSN 1758-5368, Vol. 66B, no 3, p. 287-291Article in journal (Refereed)
    Abstract [en]

    Objectives. We used data from SWEOLD, a Swedish nationally representative study of individuals aged 77 years or older, to examine midlife indicators of job strain in relation to cognitive performance and impairment.

    Methods. In all, 827 participants completed an abridged 11-point version of the Mini-Mental State Examination in-person in 1992 and/or 2002 and had self-reported and/or occupation-based scores for job control and demands from data collected in 1968. Seventeen percent scored below the cutoff for cognitive impairment.

    Results. Controlling for age, sex, education, self-rated health, and year of cognitive screening, low self-reported and occupation-based job control at midlife was associated with poorer cognitive performance later (ps < .001). For the occupation-based measure, low job control was also associated with greater likelihood of impairment, whereas having an active job (high job control/high job demands) was associated with better cognitive performance and lower likelihood of impairment (ps < .01). Childhood environment, midlife depressive symptoms, and social activity had limited influence, whereas the influence of both adulthood socioeconomic position and work complexity on these results was more pronounced.

    Discussion. Job control at midlife, by itself and in combination with job demands, may influence cognitive functioning later above and beyond demographic variables and other occupational characteristics.

  • 39. Andel, Ross
    et al.
    Silverstein, Merril
    Kåreholt, Ingemar
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Jönköping University, Sweden.
    The Role of Midlife Occupational Complexity and Leisure Activity in Late-Life Cognition2015In: The journals of gerontology. Series B, Psychological sciences and social sciences, ISSN 1079-5014, E-ISSN 1758-5368, Vol. 70, no 2, p. 314-321Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE: To examine whether occupational complexity of working with data or people, and cognitive or social leisure activity at midlife predicted cognition in advanced old age.

    METHODS: We used 810 eligible participants from Longitudinal Study of Living Conditions of the Oldest Old, a Swedish nationally representative study of individuals aged 77+ with cognitive assessments (an abridged version of the Mini-Mental State Exam) administered in 1992 and 2002 and linked to information about their midlife occupation and leisure activities collected in 1968 and 1981. A bootstrapping technique was applied to examine the direct and interactive associations of occupational complexity and leisure activity with late-life cognition.

    RESULTS: Controlling for demographic and health-related factors from childhood, midlife, and late life, we found that greater work complexity, both with people and with data, and greater participation in cognitive or social leisure activities independently related to better late-life cognitive scores. The complexity-cognition link was moderated by leisure activity such that the cognitive benefit related to the complexity of work-especially complexity of working with people-was rendered insignificant when participation in leisure activities-especially social activities-was above average.

    DISCUSSION: Results are discussed in terms of using work complexity to compensate for lack of leisure activity as well as in terms of promoting leisure engagement to compensate for long-term cognitive disadvantage imposed by working in less challenging occupations.

  • 40. Andersen, Zorana J.
    et al.
    Stafoggia, Massimo
    Weinmayr, Gudrun
    Pedersen, Marie
    Galassi, Claudia
    Jørgensen, Jeanette T.
    Oudin, Anna
    Forsberg, Bertil
    Olsson, David
    Oftedal, Bente
    Aasvang, Gunn Marit
    Aamodt, Geir
    Pyko, Andrei
    Pershagen, Göran
    Korek, Michal
    De Faire, Ulf
    Pedersen, Nancy L.
    Östenson, Claes-Göran
    Fratiglioni, Laura
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Eriksen, Kirsten T.
    Tjønneland, Anne
    Peeters, Petra H.
    Bueno-de-Mesquita, Bas
    Plusquin, Michelle
    Key, Timothy J.
    Jaensch, Andrea
    Nagel, Gabriele
    Lang, Alois
    Wang, Meng
    Tsai, Ming-Yi
    Fournier, Agnes
    Boutron-Ruault, Marie-Christine
    Baglietto, Laura
    Grioni, Sara
    Marcon, Alessandro
    Krogh, Vittorio
    Ricceri, Fulvio
    Sacerdote, Carlotta
    Migliore, Enrica
    Tamayo-Uria, Ibon
    Amiano, Pilar
    Dorronsoro, Miren
    Vermeulen, Roel
    Sokhi, Ranjeet
    Keuken, Menno
    de Hoogh, Kees
    Beelen, Rob
    Vineis, Paolo
    Cesaroni, Giulia
    Brunekreef, Bert
    Hoek, Gerard
    Raaschou-Nielsen, Ole
    Long-Term Exposure to Ambient Air Pollution and Incidence of Postmenopausal Breast Cancer in 15 European Cohorts within the ESCAPE Project2017In: Journal of Environmental Health Perspectives, ISSN 0091-6765, E-ISSN 1552-9924, Vol. 125, no 10, article id UNSP 107005Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Epidemiological evidence on the association between ambient air pollution and breast cancer risk is inconsistent. OBJECTIVE: We examined the association between long-term exposure to ambient air pollution and incidence of postmenopausal breast cancer in European women. METHODS: In 15 cohorts from nine European countries, individual estimates of air pollution levels at the residence were estimated by standardized land-usc regression models developed within the European Study of Cohorts for Air Pollution Effects (ESCAPE) and Transport related Air Pollution and Health impacts - Integrated Methodologies for Assessing Particulate Mattcr (TRANSPHORM) projects: particulate matter (PM) <= 2.5 mu m, <= 10 mu m, and 2.5-10 mu m in diameter (PM2.5, PM10, and PMcoarse, respectively); PM2.5 absorbance; nitrogen oxides (NO2 and NOx); traffic intensity; and elemental composition of PM. We estimated cohort-specific associations between breast cancer and air pollutants using Cox regression models, adjusting for major lifestyle risk factors, and pooled cohort-specific estimates using random-effects meta-analyses. RESULTS: Of 74,750 postmenopausal women included in the study, 3,612 developed breast cancer during 991,353 person-years of follow-up. We found positive and statistically insignificant associations between breast cancer and PM2.5 [hazard ratio (FIR) = 1.08 [95% confidence interval (Cl): 0.77, 1.51] per 5 mu g/m(3)}, PM10 [1.07 (95% CI: 0.89, 1.30) per 10 mu g/m(3)], PMcoarse [1.20 (95% Cl: 0.96, 1.49 per 5 mu g/m(3)], and NO2 [1.02 (95% CI: 0.98, 1.07 per 10 mu g/m(3)], and a statistically significant association with NOx [1.04 (95% CI: 1.00, 1.08) per 20 mu g/m(3), p = 0.04]. CONCLUSIONS: We-found suggestive evidence of an association between ambient air pollution and incidence of postmenopausal breast cancer in European women.

  • 41. Andersson, Christina
    et al.
    Stenfors, Cecilia U. D.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm University, Faculty of Social Sciences, Department of Psychology, Biological psychology.
    Lilliengren, Peter
    Einhorn, Stefan
    Osika, Walter
    Benevolence - Associations With Stress, Mental Health, and Self-Compassion at the Workplace2021In: Frontiers in Psychology, E-ISSN 1664-1078, Vol. 12, article id 568625Article in journal (Refereed)
    Abstract [en]

    Objective: Benevolence is an emerging concept in motivation theory and research as well as in on pro-social behavior, which has stimulated increasing interest in studying factors that impair or facilitate benevolence and effects thereof. This exploratory study examines the associations between benevolence, stress, mental health, self-compassion, and satisfaction with life in two workplace samples.

    Methods: In the first study n = 522 (38% = female, median age = 42) participants answered questionnaires regarding self-reported stress symptoms (i.e., emotional exhaustion), depressive symptoms and benevolence. In the second study n = 49 (female = 96%) participants answered questionnaires regarding perceived stress, self-compassion, anxiety, depression symptoms, and benevolence.

    Results: In study 1, measures of emotional exhaustion (r = −0.295) and depression (r = −0.190) were significantly negatively correlated with benevolence. In study 2, benevolence was significantly negatively correlated with stress (r = −0.392) and depression (r = −0.310), whereas self-compassion (0.401) was significantly positively correlated with benevolence. While correlations were in expected directions, benevolence was not significantly associated with Satisfaction with Life (r = 0.148) or anxiety (r = −0.199) in study 2.

    Conclusion: Self-assessed benevolence is associated with levels of perceived stress, exhaustion, depression, and self-compassion. Future studies are warranted on how benevolence is related to stress and mental ill health such as depression and anxiety, and if benevolence can be trained in order to decrease stress and mental ill health such as depression and anxiety in workplace settings.

  • 42.
    Andersson, Håkan
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology.
    Grabell, Adam
    Department of clinical and developmental psychology, University of Michigan, MI, United States.
    Chang, Hyein
    Sungkyunkwan University, Seoul, South Korea.
    Lovén, Johanna
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Olson, Sheryl
    Department of clinical and developmental psychology, University of Michigan, MI, United States.
    The Contribution of Hot and Cool Self-Regulation in Early Childhood to Later Academic AchievementManuscript (preprint) (Other academic)
    Abstract [en]

    The aim of the present study was to investigate the contribution of hot (emotional/motivational) and cool (cognitive) self-regulation in early childhood to lateracademic achievement in kindergarten (math) and late elementary school (math andlanguage). In a sample of 235 preschoolers, higher levels of cool self-regulation predicted better math achievement in kindergarten and this head-start effect persisted into late elementary school. In contrast, higher levels of hot self-regulation predicted better language but not math achievement in late elementary school. These findings support the notion that cool self-regulation is important for the development of academic skills already inkindergarten, whereas the effects on academic achievement of hot self-regulation are delayed, which may be a result of increasing demands through elementary school.

  • 43. Andersson, Pernilla
    et al.
    Li, Xin
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Persson, Jonas
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Örebro University, Sweden.
    The association between control of interference and white-matter integrity: A cross-sectional and longitudinal investigation2022In: Neurobiology of Aging, ISSN 0197-4580, E-ISSN 1558-1497, Vol. 114, p. 49-60Article in journal (Refereed)
    Abstract [en]

    Proactive interference (PI) occurs when old information interferes with newly acquired information and has been suggested as a major cause of forgetting in working memory. In this study, we investigate cross-sectional (N = 267) and longitudinal (N = 148) associations between PI and white-matter integrity (WMI) using diffusion-weighted imaging in an adult life-span sample (25–80 years; Mage = 60.15; 138 female). Older age was related to higher PI and lower WMI. Cross-sectional analyses showed associations between PI and WMI spanning several white-matter tracts as well as globally, suggesting that the age-related decline in PI may be driven primarily by global changes in WMI. Furthermore, longitudinal changes in PI were shown to be negatively correlated with concurrent changes in WMI in the fornix. Mediation analyses showed that WMI mediated the relationship between age and PI only in older adults, indicating that WMI becomes increasingly connected to cognitive functioning with increasing age. This is the first demonstration of WMI decline contributing to the age-related decline in PI.

  • 44. Andres Gimeno-Feliu, Luis
    et al.
    Calderón-Larrañaga, Amaia
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Miguel Servet University Hospital, Spain; Carlos III Health Institute, Spain.
    Diaz, Esperanza
    Laguna-Berna, Clara
    Poblador-Plou, Beatriz
    Coscollar, Carlos
    Prados-Torres, Alexandra
    Multimorbidity and immigrant status: associations with area of origin and length of residence in host country2017In: Family Practice, ISSN 0263-2136, E-ISSN 1460-2229, Vol. 34, no 6, p. 662-666Article in journal (Refereed)
    Abstract [en]

    Aim. Multimorbidity is a growing phenomenon in primary care, and knowledge of the influence of social determinants on its evolution is vital. The aim of this study was to understand the relationship between multimorbidity and immigration, taking into account length of residence in the host country and area of origin of the immigrant population. Methods. Cross-sectional retrospective study of all adult patients registered within the public health service of Aragon, Spain (N = 1 092 279; 144 238 were foreign-born), based on data from the EpiChron Cohort. Age-standardized prevalence rates of multimorbidity were calculated. Different models of binary logistic regressions were conducted to study the association between multimorbidity, immigrant status and length of residence in the host country. Results. The risk of multimorbidity in foreign-borns was lower than that of native-borns [odds ratio (OR): 0.54, 95% confidence interval (CI): 0.53-0.55]. The probability of experiencing multimorbidity was lowest for Asians (OR: 0.34, 95% CI: 0.31-0.37) and Eastern Europeans (OR: 0.42, 95% CI: 0.40-0.43), and highest for Latin Americans (OR: 0.70, 95% CI: 0.68-0.72). Foreign-born immigrants residing in Aragon for >= 5 years had a higher multimorbidity risk than those residing for < 5 years (OR: 2.3, 95% CI: 2.2-2.4). Conclusion. Prevalence of multimorbidity is lower among foreign-borns as compared with native-borns, but increases rapidly with length of residence in the host country. However, the progressive development of multimorbidity among immigrants varies widely depending on area of origin. These findings provide important insight into the health care needs of specific population groups and may help minimize the negative impact of multimorbidity among the most vulnerable groups.

  • 45. Andrieu, S.
    et al.
    Aboderin, I.
    Baeyens, J.-P.
    Beard, J.
    Benetos, A.
    Berrut, G.
    Brainin, M.
    Cha, H.-B.
    Chen, L.-K.
    Du, P.
    Forette, B.
    Franco, A.
    Fratiglioni, Laura
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Gillette-Guyonnet, S.
    Gold, G.
    Gomez, F.
    Guimaraes, R.
    Gustafson, D.
    Khachaturian, A.
    Luchsinger, J.
    Mangialasche, Francesca
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Mathiex-Fortunet, H.
    Michel, J.-P.
    Richard, E.
    Schneider, L.S.
    Solomon, Alina
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). 1Institute of Clinical Medicine-Neurology, University of Eastern Finland, Kuopio, Finland.
    Vellas, B.
    IAGG workshop: health promotion program on prevention of late onset dementia2011In: The Journal of Nutrition, Health & Aging, ISSN 1279-7707, E-ISSN 1760-4788, Vol. 15, no 7, p. 562-575Article, review/survey (Refereed)
  • 46.
    Angleman, Sara B.
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Santoni, Giola
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Pilotto, Alberto
    Fratiglioni, Laura
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm Gerontology Research Center, Karolinska Institutet.
    Welmer, Anna-Karin
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Multidimensional Prognostic Index in Association with Future Mortality and Number of Hospital Days in a Population-Based Sample of Older Adults: Results of the EU Funded MPI_AGE Project2015In: PLOS ONE, E-ISSN 1932-6203, Vol. 10, no 7, article id e0133789Article in journal (Refereed)
    Abstract [en]

    Background The Multidimensional Prognostic Index (MPI) has been found to predict mortality in patients with a variety of clinical conditions. We aimed to assess the association of the MPI with future mortality and number of in-hospital days for the first time in a population-based cohort. Methods The study population consisted of 2472 persons, aged 66-99 years, from the Swedish National Study on Aging and Care in Kungsholmen, Sweden, who underwent the baseline visit 2001-4, and were followed up >10 years for in-hospital days and >12 years for mortality. The MPI was a modified version of the original and aggregated seven domains (personal and instrumental activities of daily living, cognitive function, illness severity and comorbidity, number of medications, co-habitation status, and nutritional status). The MPI score was divided into risk groups: low, medium and high. Number of in-hospital days (within 1, 3 and 10 years) and mortality data were derived from official registries. All analyses were age-stratified (sexagenarians, septuagenarians, octogenarians, nonagenarians). Results During the follow-up 1331 persons (53.8%) died. Laplace regression models, suggested that median survival in medium risk groups varied by age from 2.2-3.6 years earlier than for those in the corresponding low risk groups (p = 0.002-p<0.001), and median survival in high risk groups varied by age from 3.8-9.0 years earlier than for corresponding low risk groups (p<0.001). For nonagenarians, the median age at death was 3.8 years earlier in the high risk group than for the low risk group (p<0.001). The mean number of in-hospital days increased significantly with higher MPI risk score within 1 and 3 years for people of each age group. Conclusion For the first time, the effectiveness of MPI has been verified in a population-based cohort. Higher MPI risk scores associated with more days in hospital and with fewer years of survival, across a broad and stratified age range.

  • 47.
    Angleman, Sara B.
    et al.
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm Gerontology Research Center, Sweden.
    Santoni, Giola
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Von Strauss, Eva
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). The Swedish Red Cross University College, Sweden.
    Fratiglioni, Laura
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). The Swedish Red Cross University College, Sweden.
    Temporal Trends of Functional Dependence and Survival Among Older Adults From 1991 to 2010 in Sweden: Toward a Healthier Aging2015In: The journals of gerontology. Series A, Biological sciences and medical sciences, ISSN 1079-5006, E-ISSN 1758-535X, Vol. 70, no 6, p. 746-752Article in journal (Refereed)
    Abstract [en]

    Background. Declines in functional dependence among older adults were observed before the 1990s, but there is uncertainty about subsequent trends. Our study aimed to verify the temporal trends in disability during 1991-2010 in an older Swedish population and to estimate the associated changes in survival. Methods. Functional status in octogenarians and nonagenarians was assessed at seven occasions with intervals of 2-3 years. Sample size varied at each assessment with an average of 646 (range 212-1096). Disability was defined as difficulty in one or more of personal activities of daily living. We compared prevalence and incidence, as well as mortality, and survival associated with disability over the 20-year period. Results. Sex-standardized prevalence of disability remained steady over time with a tendency toward a gradual decline, and a statistically significant decrease was present among nonagenarians. Sex-standardized cumulative incidence also remained steady. The proportion of people with prevalent disability who died <3 years remained stable, as did the survival time of people with incident disability. In contrast, among nondisabled persons, 3-year mortality decreased significantly, and for octogenarians median survival time was 1.3 years longer at the more recent assessment than a decade earlier. Conclusions. Both prevalence and incidence of disability remained stable over the last two decades in this urban Swedish population, with a trend toward a slow decline. Mortality remained steady among disabled persons but decreased among persons without disability, suggesting that increased life expectancy during the last two decades may be essentially driven by longer lives of functionally independent people.

  • 48. Anstey, Kaarin J.
    et al.
    Cherbuin, Nicolas
    Herath, Pushpani M.
    Qiu, Chengxuan
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    Kuller, Lewis H.
    Lopez, Oscar L.
    Wilson, Robert S.
    Fratiglioni, Laura
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
    A Self-Report Risk Index to Predict Occurrence of Dementia in Three Independent Cohorts of Older Adults: The ANU-ADRI2014In: PLOS ONE, E-ISSN 1932-6203, Vol. 9, no 1, p. e86141-Article in journal (Refereed)
    Abstract [en]

    Background and Aims: The Australian National University AD Risk Index (ANU-ADRI, http://anuadri.anu.edu.au) is a self-report risk index developed using an evidence-based medicine approach to measure risk of Alzheimer's disease (AD). We aimed to evaluate the extent to which the ANU-ADRI can predict the risk of AD in older adults and to compare the ANU-ADRI to the dementia risk index developed from the Cardiovascular Risk Factors, Aging and Dementia (CAIDE) study for middle-aged cohorts. Methods: This study included three validation cohorts, i.e., the Rush Memory and Aging Study (MAP) (n = 903, age >= 53 years), the Kungsholmen Project (KP) (n = 905, age >= 75 years), and the Cardiovascular Health Cognition Study (CVHS) (n = 2496, age >= 65 years) that were each followed for dementia. Baseline data were collected on exposure to the 15 risk factors included in the ANU-ADRI of which MAP had 10, KP had 8 and CVHS had 9. Risk scores and C-statistics were computed for individual participants for the ANU-ADRI and the CAIDE index. Results: For the ANU-ADRI using available data, the MAP study c-statistic was 0.637 (95% CI 0.596-0.678), for the KP study it was 0.740 (0.712-0.768) and for the CVHS it was 0.733 (0.691-0.776) for predicting AD. When a common set of risk and protective factors were used c-statistics were 0.689 (95% CI 0.650-0.727), 0.666 (0.628-0.704) and 0.734 (0.707-0.761) for MAP, KP and CVHS respectively. Results for CAIDE ranged from c-statistics of 0.488 (0.427-0.554) to 0.595 (0.565-0.625). Conclusion: A composite risk score derived from the ANU-ADRI weights including 8-10 risk or protective factors is a valid, self-report tool to identify those at risk of AD and dementia. The accuracy can be further improved in studies including more risk factors and younger cohorts with long-term follow-up.

  • 49. Arnison, Tor
    et al.
    Schrooten, Martien G. S.
    Bauducco, Serena
    Jansson-Fröjmark, Markus
    Persson, Jonas
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Örebro University, Sweden.
    Sleep phase and pre-sleep arousal predicted co-developmental trajectories of pain and insomnia within adolescence2022In: Scientific Reports, E-ISSN 2045-2322, Vol. 12, no 1, article id 4480Article in journal (Refereed)
    Abstract [en]

    The onset of both chronic pain and insomnia is high during adolescence. Although a bidirectional relationship between pain and insomnia has support, how pain and sleep co-develop throughout adolescence remains unknown. Sleep-wake patterns, pre-sleep behavior and pre-sleep arousal may influence the co-development of pain and insomnia. Four waves of longitudinal self-report data were used (N-baseline = 2767, Age(baseline) M = 13.65 years, SD = 0.65). Multidimensional growth mixture modeling was used to identify four subgroups of adolescents with different concurrent trajectories of pain and insomnia. The trajectories followed each other across time in all classes: one class of consistently low pain and insomnia (68.7%), one class with persistent high symptoms (4.9%), as well as one class of increasing (13.9%), and one of decreasing (12.5%), trajectories. Later sleep-wake patterns and more pre-sleep cognitive-emotional arousal predicted both increasing and decreasing trajectories of concurrent pain and insomnia. The current study showed that developmental trajectories of pain and insomnia follow each other within adolescents and across adolescence. Both sleep-phase focused interventions as well as psychological interventions that focus on pre-sleep cognitive-emotional arousal may prove beneficial for adolescents with comorbid pain and insomnia.

  • 50. Arthur Hvidtfeldt, Ulla
    et al.
    Chen, Jie
    Jovanovic Andersen, Zorana
    Atkinson, Richard
    Bauwelinck, Mariska
    Bellander, Tom
    Brandt, Jørgen
    Brunekreef, Bert
    Cesaroni, Giulia
    Concin, Hans
    Fecht, Daniela
    Forastiere, Francesco
    van Gils, Carla H.
    Gulliver, John
    Hertel, Ole
    Hoek, Gerard
    Hoffmann, Barbara
    de Hoogh, Kees
    Janssen, Nicole
    Therming Jørgensen, Jeanette
    Katsouyanni, Klea
    Jöckel, Karl-Heinz
    Ketzel, Matthias
    Klompmaker, Jochem O.
    Lang, Alois
    Leander, Karin
    Liu, Shuo
    Ljungman, Petter L. S.
    Magnusson, Patrik K. E.
    Mehta, Amar Jayant
    Nagel, Gabriele
    Oftedal, Bente
    Pershagen, Göran
    Peter, Raphael Simon
    Peters, Annette
    Renzi, Matteo
    Rizzuto, Debora
    Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI). Stockholm Gerontology Research Centrum, Sweden.
    Rodopoulou, Sophia
    Samoli, Evangelia
    Schwarze, Per Everhard
    Severi, Gianluca
    Sigsgaard, Torben
    Stafoggia, Massimo
    Strak, Maciej
    Vienneau, Danielle
    Weinmayr, Gudrun
    Wolf, Kathrin
    Raaschou-Nielsen, Ole
    Long-term exposure to fine particle elemental components and lung cancer incidence in the ELAPSE pooled cohort2021In: Environmental Research, ISSN 0013-9351, E-ISSN 1096-0953, Vol. 193, article id 110568Article in journal (Refereed)
    Abstract [en]

    Background: An association between long-term exposure to fine particulate matter (PM2.5) and lung cancer has been established in previous studies. PM2.5 is a complex mixture of chemical components from various sources and little is known about whether certain components contribute specifically to the associated lung cancer risk. The present study builds on recent findings from the Effects of Low-level Air Pollution: A Study in Europe (ELAPSE) collaboration and addresses the potential association between specific elemental components of PM2.5 and lung cancer incidence.

    Methods: We pooled seven cohorts from across Europe and assigned exposure estimates for eight components of PM2.5 representing non-tail pipe emissions (copper (Cu), iron (Fe), and zinc (Zn)), long-range transport (sulfur (S)), oil burning/industry emissions (nickel (Ni), vanadium (V)), crustal material (silicon (Si)), and biomass burning (potassium (K)) to cohort participants' baseline residential address based on 100 m by 100 m grids from newly developed hybrid models combining air pollution monitoring, land use data, satellite observations, and dispersion model estimates. We applied stratified Cox proportional hazards models, adjusting for potential confounders (age, sex, calendar year, marital status, smoking, body mass index, employment status, and neighborhood-level socio-economic status).

    Results: The pooled study population comprised 306,550 individuals with 3916 incident lung cancer events during 5,541,672 person-years of follow-up. We observed a positive association between exposure to all eight components and lung cancer incidence, with adjusted HRs of 1.10 (95% CI 1.05, 1.16) per 50 ng/m(3) PM2.5 K, 1.09 (95% CI 1.02, 1.15) per 1 ng/m3 PM2.5 Ni, 1.22 (95% CI 1.11, 1.35) per 200 ng/m(3) PM2.5 S, and 1.07 (95% CI 1.02, 1.12) per 200 ng/m(3) PM2.5 V. Effect estimates were largely unaffected by adjustment for nitrogen dioxide (NO2). After adjustment for PM2.5 mass, effect estimates of K, Ni, S, and V were slightly attenuated, whereas effect estimates of Cu, Si, Fe, and Zn became null or negative.

    Conclusions: Our results point towards an increased risk of lung cancer in connection with sources of combustion particles from oil and biomass burning and secondary inorganic aerosols rather than non-exhaust traffic emissions. Specific limit values or guidelines targeting these specific PM2.5 components may prove helpful in future lung cancer prevention strategies.

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