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Disability Pension Among Swedish Twins—Prevalence Over 16 Years and Associations With Sociodemographic Factors in 1992

Samuelsson, Åsa MSc; Ropponen, Annina PhD; Alexanderson, Kristina PhD; Lichtenstein, Paul PhD; Svedberg, Pia PhD

Journal of Occupational and Environmental Medicine: January 2012 - Volume 54 - Issue 1 - p 10–16
doi: 10.1097/JOM.0b013e31823d86d5
ORIGINAL ARTICLES: CME Available for this Article at ACOEM.org
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CME

Objective: To investigate annual prevalence of disability pension (DP) from 1992 to 2007 and associations with sociodemographic factors in 1992.

Methods: All twins born between 1928 and 1958 were identified from the Swedish Twin Registry and linked to national records on DP. Descriptive statistics and logistic regressions were applied.

Results: The annual prevalence of DP was 10.7% (9.6% to 11.3%). High age (odds ratio [OR] 9.17; 95% confidence interval [CI] 8.43 to 9.98), low education (OR 4.84; 95% CI 4.31 to 5.42), and being unmarried (OR 2.36; 95% CI 2.22 to 2.50) were associated with DP. The associations remained after adjusting for familial factors.

Conclusions: The fact that the associations remained after control for familial factors indicates that factors not shared by family members, such as choices in adulthood, are of relevance for the associations found.

From the Division of Insurance Medicine, Department of Clinical Neuroscience (Ms Samuelsson, and Drs Alexanderson and Svedberg) and Department of Medical Epidemiology and Biostatistics (Dr Lichtenstein), Karolinska Institutet, Stockholm, Sweden; Ergonomics, Institute of Biomedicine (Dr Ropponen), Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland.

Address correspondence to: Åsa Samuelsson, MSc, Karolinska Institutet, Department of Clinical Neuroscience, Division of Insurance Medicine, SE- 171 77 Stockholm, Sweden (asa.samuelsson@ki.se).

The authors have declared no conflicts of interest. Author Samuelsson and coauthors Ropponen, Alexanderson, Lichtenstein, and Svedberg have no disclosures in addition to the acknowledgements as stated.

The JOEM Editorial Board and planners have no financial interest related to this research.

©2012The American College of Occupational and Environmental Medicine