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Trajectories of job demands and control: risk for subsequent symptoms of major depression in the nationally representative Swedish Longitudinal Occupational Survey of Health (SLOSH)
Stockholms universitet, Samhällsvetenskapliga fakulteten, Stressforskningsinstitutet.ORCID-id: 0000-0002-3642-6391
Stockholms universitet, Samhällsvetenskapliga fakulteten, Stressforskningsinstitutet.
Stockholms universitet, Samhällsvetenskapliga fakulteten, Stressforskningsinstitutet.ORCID-id: 0000-0002-2908-1903
2018 (Engelska)Ingår i: International Archives of Occupational and Environmental Health, ISSN 0340-0131, E-ISSN 1432-1246, Vol. 91, nr 3, s. 263-272Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Purpose

Depression is a global health concern. High job demands, low job control, and the combination (high strain) are associated with depression. However, few longitudinal studies have investigated changed or repeated exposure to demands and control related to depression. We investigated how trajectories of exposure to job demands and control jointly influence subsequent depression.

Methods

We included 7949 subjects from the Swedish Longitudinal Occupational Survey of Health, who completed questionnaires of perceived job demands and control, and depressive symptoms from 2006 to 2014. None of them were depressed between 2006 and 2012. Univariate and joint group-based trajectory models identified groups with similar development of demands and control across 2006–2012. Logistic regression estimated the risk for symptoms of major depression in 2014 according to joint trajectory groups.

Results

The joint trajectory model included seven groups, all with fairly stable levels of demands and control over time. Subjects in the high strain and active (high demands and high control) trajectories were significantly more likely to have subsequent major depressive symptoms compared to those having low strain, controlling for demographic covariates (OR 2.15; 95% Cl 1.24–3.74 and OR 2.04; 95% CI 1.23–3.40, respectively). The associations did not remain statistically significant after adjusting for previous depressive symptoms in addition to demographic covariates.

Conclusions

The results indicate that the levels of job demands and control were relatively unchanged across 6 years and suggest that long-term exposure to a high strain or active job may be associated with increased risk for subsequent depression.

Ort, förlag, år, upplaga, sidor
2018. Vol. 91, nr 3, s. 263-272
Nyckelord [en]
Depressive symptoms, Demand-control model, Job strain, Work stress, Longitudinal studies, Latent class growth analysis
Nationell ämneskategori
Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi
Forskningsämne
folkhälsovetenskap
Identifikatorer
URN: urn:nbn:se:su:diva-151280DOI: 10.1007/s00420-017-1277-0ISI: 000427151700002PubMedID: 29128892OAI: oai:DiVA.org:su-151280DiVA, id: diva2:1172496
Tillgänglig från: 2018-01-10 Skapad: 2018-01-10 Senast uppdaterad: 2019-12-09Bibliografiskt granskad
Ingår i avhandling
1. Rhythm of the job stress blues: Psychosocial working conditions and depression in working life and across retirement
Öppna denna publikation i ny flik eller fönster >>Rhythm of the job stress blues: Psychosocial working conditions and depression in working life and across retirement
2019 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

A work environment characterized by poor psychosocial working conditions may lead to stress and mental health problems such as depression, a common and burdensome public health problem with significant consequences for individuals and for society at large. A number of psychosocial working characteristics have been found to be associated with increased depressive symptoms or clinical depression. This thesis aims to further examine how certain psychosocial working conditions predict depressive symptoms over time, in working life and across retirement. This was done by using several repeated measures from the Swedish Longitudinal Occupational Survey of Health (SLOSH) in 2006–2018.

In study I, we investigated how long-term patterns of exposure to job demands and job control were associated with major depressive symptoms. Those with high strain (high demands, low control) and active (high demands, high control) jobs were more likely to have subsequent major depressive symptoms compared to those with low strain jobs (low demands, high control). However, after adjusting for baseline depressive symptoms and various demographic factors, the associations did not remain statistically significant.

In study II, we assessed how job demands, job control and workplace social support were related to long-term development of depressive symptoms. A perception of high job demands and low social support predicted higher or increasing depressive symptom trajectories. In addition, negative changes in job demands, job control and social support were associated with increased symptoms, indicating that the onset of poor working conditions could negatively impact depressive symptoms.

In study III, we investigated simultaneous and lagged bidirectional associations between job demands, job control, balance between demands and control, social support, procedural justice, effort, reward, balance between efforts and rewards, and depressive symptoms, while controlling for individual time-stable characteristics. There were associations between all work stressors and depressive symptoms when measured simultaneously, except for job control. However, only efforts, were prospectively associated with depressive symptoms measured later.

In study IV, we examined how the same psychosocial working characteristics as in study III were associated with the development of depressive symptoms across retirement. Generally, depressive symptoms appeared to decrease across retirement. Job demands, job strain, social support, rewards, effort-reward imbalance and procedural justice, but to a lesser extent job control and efforts, were associated with a more negative and positive course of depressive symptoms across retirement. Especially, depressive symptoms decreased in relation to retirement for a small group with previously high exposure to work stress.

In conclusion, this thesis indicates that particularly perceptions of high job demands, low workplace social support and high work effort predict subsequent higher levels of depressive symptoms, and/or influence the course of symptoms both in working life and past retirement. In addition, changes in these types of conditions seemed to influence the course of depressive symptoms. Especially, the relief from previous exposure to work stress at retirement seemed to have a clear positive impact on depressive symptoms. These results contribute to strengthen the evidence of causality between these types of work stressors and depressive symptoms.

Ort, förlag, år, upplaga, sidor
Stockholm: Department of Public Health Sciences, Stockholm University, 2019. s. 85
Serie
Stockholm Studies in Public Health Sciences, ISSN 2003-0061 ; 2
Nyckelord
job stress, psychosocial working conditions, job demand-control-support model, effort-reward imbalance model, organizational justice, depressive symptoms, longitudinal studies, trajectory analysis, latent class analysis, fixed-effects regression
Nationell ämneskategori
Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi Arbetsmedicin och miljömedicin
Forskningsämne
folkhälsovetenskap
Identifikatorer
urn:nbn:se:su:diva-168220 (URN)978-91-7797-652-3 (ISBN)978-91-7797-653-0 (ISBN)
Disputation
2019-06-14, rum 207, Stressforskningsinstitutet, Frescati Hagväg 16 A, Stockholm, 13:00 (Engelska)
Opponent
Handledare
Anmärkning

At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 4: Manuscript.

Tillgänglig från: 2019-05-22 Skapad: 2019-04-29 Senast uppdaterad: 2019-05-09Bibliografiskt granskad

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Åhlin, Julia K.Westerlund, HugoMagnusson Hanson, Linda L.
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International Archives of Occupational and Environmental Health
Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi

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