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Relationship of Subjective Cognitive Impairment and Cognitive Impairment No Dementia to Chronic Disease and Multimorbidity in a Nation-Wide Twin Study
Stockholm University, Faculty of Social Sciences, Stress Research Institute. Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
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2013 (English)In: Journal of Alzheimer's Disease, ISSN 1387-2877, Vol. 36, no 2, 275-284 p.Article in journal (Refereed) Published
Abstract [en]

We investigated the relation of subjective cognitive impairment (SCI) and cognitive impairment no dementia (CIND) to common chronic diseases of the elderly and multimorbidity, and assessed the contribution of genetic background and shared familial environment to these associations. Subjects were 11,379 dementia-free twin individuals aged >= 65 from the Swedish Twin Registry. SCI was defined as subjective complaint of cognitive change without objective cognitive impairment and CIND was defined according to current criteria. In unmatched, fully-adjusted regression models, mental, musculoskeletal, respiratory, and urological diseases were all significantly associated with increased odds ratios (ORs) of SCI and CIND. Circulatory and gastrointestinal diseases were related to SCI only, while endocrine diseases were associated with CIND. The adjusted ORs of multimorbidity were 2.1 [95% confidence intervals (95% CI): 1.8-2.3] for SCI and 1.5 for CIND (95% CI: 1.3-1.8). A dose-dependent relationship was observed between number of chronic diseases and ORs for SCI but not for CIND. In co-twin control analyses, the chronic diseases-SCI association was largely unchanged. On the other hand, the chronic diseases-CIND association was no longer statistically significant, except for cancer, where an increased OR was observed. In conclusion, chronic morbidity is associated with both SCI and CIND but disease profiles do not always overlap between the two cognitive syndromes. The association is stronger when diseases co-occur, especially for SCI. Genetic and early-life environmental factors may partially explain the association of CIND but not that of SCI with chronic diseases.

Place, publisher, year, edition, pages
2013. Vol. 36, no 2, 275-284 p.
Keyword [en]
Chronic diseases, chronic morbidity, cognitive impairment, co-morbidity, cross-sectional, population-based, subjective cognitive complaints, twin-study
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URN: urn:nbn:se:su:diva-92148DOI: 10.3233/JAD-122050ISI: 000320537700007Local ID: P3067OAI: diva2:637738
Forte, Swedish Research Council for Health, Working Life and WelfareNIH (National Institute of Health), R01 AG08724Swedish Cancer Society


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Available from: 2013-07-22 Created: 2013-07-19 Last updated: 2013-11-28Bibliographically approved

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Caracciolo, Barbara
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Stress Research InstituteAging Research Center (ARC), (together with KI)
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