title: Disability pension among Swedish twins--prevalence over 16 years and associations with sociodemographic factors in 1992.
abstract: 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.
authors.affiliation: Division of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden. asa.samuelsson@ki.se
authors.forename: Åsa
authors.initials: Å
authors.lastname: Samuelsson
authors.forename: Annina
authors.initials: A
authors.lastname: Ropponen
authors.forename: Kristina
authors.initials: K
authors.lastname: Alexanderson
authors.forename: Paul
authors.initials: P
authors.lastname: Lichtenstein
authors.forename: Pia
authors.initials: P
authors.lastname: Svedberg
mesh_terms: D000328:Adult; D015331:Cohort Studies; D006233:Persons with Disabilities / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D017533:Marital Status / Q000706:statistics & numerical data; D008875:Middle Aged; D010415:Pensions / Q000706:statistics & numerical data*; D015995:Prevalence; D012959:Socioeconomic Factors; D013548:Sweden / Q000453:epidemiology; D014427:Twins / Q000706:statistics & numerical data*; D044465:White People / Q000706:statistics & numerical data