title: Complexity of primary lifetime occupation and cognition in advanced old age.
abstract: OBJECTIVE
  The authors explored the association between complexity of primary lifetime occupation and cognition in older adulthood.
  
  
  METHODS
  The study included 386 participants from the Swedish Panel Study of Living Conditions of the Oldest Old, a nationally representative sample aged 77 years or older. The authors examined complexity of work with data, people, and things in relation to cognitive functioning, measured with a shortened version of Mini-Mental State Examination (MMSE) and cognitive impairment based on MMSE score cutoff.
  
  
  RESULTS
  Complexity of work with data and people were associated with better MMSE scores, controlling for age, sex, childhood socioeconomic status, and education. The association between complexity of work with data and MMSE remained statistically significant when adult occupational status was substituted for education as a covariate.
  
  
  CONCLUSIONS
  Complexity of primary lifetime occupation may be reflected in cognitive functioning even in advanced old age. This effect may be independent of education or occupational status.
authors.affiliation: School of Aging Studies, MHC 1321, University of South Florida, 4202 E. Fowler Ave., Tampa, FL 33620, USA. randel@cas.usf.edu.
authors.forename: Ross
authors.initials: R
authors.lastname: Andel
authors.forename: Ingemar
authors.initials: I
authors.lastname: Kåreholt
authors.forename: Marti G
authors.initials: MG
authors.lastname: Parker
authors.forename: Mats
authors.initials: M
authors.lastname: Thorslund
authors.forename: Margaret
authors.initials: M
authors.lastname: Gatz
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003071:Cognition; D003072:Cognition Disorders; D004493:Education; D005260:Female; D006801:Humans; D008297:Male; D009790:Occupations; D012959:Socioeconomic Factors; D013548:Sweden