title: Health inequalities in different age groups: the case of type 2-diabetes: a study with health insurance and medication data.
abstract: OBJECTIVE
  This study investigates social differentials in the prevalence of diabetes type 2 in women and men in a health insurance population. It is considered whether social gradients are present over different age strata.
  
  
  METHODS
  Analyses were performed with records obtained from a German statutory health insurance comprising 77,294 women (31.8%) and men (68.2%) of at least 20 years. Occupational status was used as indicator of socio-economic position. Individuals with diabetes were identified using information about antidiabetic medication or by hospital diagnoses according to ICD9. The analyses were performed for the entire insurance population and for different age strata (<40 yrs /40-55 yrs/ >55 yrs).
  
  
  RESULTS
  The analyses revealed considerable social differences in diabetes risks. Considering the whole insurance population with the highest socio-economic category as reference group, the odds ratio (OR) for skilled non-manuals was OR = 2.9, for skilled manuals it was OR = 4.7, and OR = 5.6 for unskilled and semi-skilled individuals. After stratifying the insurance population into three age groups the social gradients were reproduced for each stratum, but their magnitudes increased with age.
  
  
  CONCLUSIONS
  In the health insurance population considered health inequalities with respect to diabetes are considerable, and they are persisting after stratification into age groups.
authors.affiliation: Medical Sociology Unit, Hannover Medical School. geyer.siegfried@mh-hannover.de
authors.forename: Siegfried
authors.initials: S
authors.lastname: Geyer
authors.forename: Richard
authors.initials: R
authors.lastname: Peter
authors.forename: Iris
authors.initials: I
authors.lastname: Nielsen
mesh_terms: D000328:Adult; D000367:Age Factors; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology*; D005260:Female; D005858:Germany; D006801:Humans; D007348:Insurance, Health; D008297:Male; D008875:Middle Aged; D009790:Occupations; D016017:Odds Ratio; D015995:Prevalence; D012307:Risk Factors; D012737:Sex Factors; D012959:Socioeconomic Factors