title: Prevalence of dementia in nursing home and community-dwelling older adults in Germany.
abstract: OBJECTIVE
  We compared the prevalence of dementia in nursing home residents and community-dwelling older adults .
  
  
  METHODS
  Using health insurance claims data for the year 2009, we estimated the prevalence of at least three of four quarters with a diagnosis of dementia in persons aged ≥65 years.
  
  
  RESULTS
  Of 213,694 persons aged 65+ years, 4,584 (2.2 %) lived in nursing homes. The prevalence of dementia was 51.8 % (95 % CI 50.4-53.3) in nursing home residents and 2.7 % (95 % CI 2.6-2.8) in community-dwelling elderly. Increasing prevalences with age were found in both sexes in community-dwelling elderly. These trends were not seen in nursing home residents where prevalences were already high for the age group 65-69 years (35.7 % in males and 40.9 % in females, respectively).
  
  
  CONCLUSIONS
  More than half of nursing home residents suffer from dementia, which is about 19-fold higher than the prevalence in insured living in the community.
authors.affiliation: Division Health Economics, Health Policy and Outcomes Research, Centre for Social Policy Research, University of Bremen, Postfach 33 04 40, 28334, Bremen, Germany, hoffmann@zes.uni-bremen.de.
authors.forename: Falk
authors.initials: F
authors.lastname: Hoffmann
authors.forename: Hanna
authors.initials: H
authors.lastname: Kaduszkiewicz
authors.forename: Gerd
authors.initials: G
authors.lastname: Glaeske
authors.forename: Hendrik
authors.initials: H
authors.lastname: van den Bussche
authors.forename: Daniela
authors.initials: D
authors.lastname: Koller
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D003704:Dementia / Q000175:diagnosis* / Q000453:epidemiology*; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D007348:Insurance, Health; D008297:Male; D009735:Nursing Homes; D015995:Prevalence