title: Differential changes in body mass index after retirement by occupation: hierarchical models.
abstract: OBJECTIVE
  This paper examines whether retirement differentially affects body mass index (BMI) patterns by occupation; occupation embodies differences in on-the-job physical demands as well as socioeconomic characteristics that could lead to variation in post-retirement BMI.
  
  
  METHODS
  We use 12 years of national data from the US and hierarchical linear models to compare BMI trajectories among four broad occupational classes.
  
  
  RESULTS
  We find that those in service and other blue-collar occupations have significant increases in the slopes of their BMI trajectories after retirement, whereas participants in white-collar occupations exhibit no change. This may be due to differences in the physical requirements across blue and white collar jobs or differences in health habits post-retirement.
  
  
  CONCLUSIONS
  Retirement may provide an opportunity to help prevent obesity in older individuals, especially blue collar workers.
authors.affiliation: Yale School of Public Health, New Haven, USA.
authors.forename: Ralitza
authors.initials: R
authors.lastname: Gueorguieva
authors.forename: Jody L
authors.initials: JL
authors.lastname: Sindelar
authors.forename: Ran
authors.initials: R
authors.lastname: Wu
authors.forename: William T
authors.initials: WT
authors.lastname: Gallo
mesh_terms: D000368:Aged; D000375:Aging; D015992:Body Mass Index; D016000:Cluster Analysis; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008019:Life Style; D008137:Longitudinal Studies; D008297:Male; D009765:Obesity / Q000517:prevention & control*; D009790:Occupations; D012179:Retirement; D012959:Socioeconomic Factors; D014481:United States; D015430:Weight Gain