title: Is sleep duration associated with obesity in older Australian adults?
abstract: OBJECTIVE
  To investigate the relationship between sleep duration and obesity in older Australian adults.
  
  
  METHODS
  Self-reported health data were collected through the 45 and Up Study. Multinomial logistic regression models were used to test the relationship between sleep duration and body mass index, controlling for a range of demographic and health-related variables.
  
  
  RESULTS
  The sample included 45,325 Australian adults aged 55 to 95 years. The regression models demonstrated that short and long sleep were associated with obesity in 55- to 64-year-olds but not in those aged 65 years and above.
  
  
  CONCLUSIONS
  The present results suggest that the relationships between sleep duration and obesity previously reported in young and middle-aged adults are not evident in older adults. The absence of these relationships could reflect a combination of age-related factors that impact on sleep and body composition.
authors.affiliation: University of Wollongong, New South Wales, Australia. cmagee@uow.edu.au.
authors.forename: Christopher A
authors.initials: CA
authors.lastname: Magee
authors.forename: Peter
authors.initials: P
authors.lastname: Caputi
authors.forename: Don C
authors.initials: DC
authors.lastname: Iverson
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D000704:Analysis of Variance; D001315:Australia / Q000453:epidemiology; D015992:Body Mass Index; D016009:Chi-Square Distribution; D016001:Confidence Intervals; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008019:Life Style; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity / Q000453:epidemiology*; D016017:Odds Ratio; D011594:Psychometrics; D057566:Self Report; D012890:Sleep / Q000502:physiology*; D011795:Surveys and Questionnaires; D013997:Time Factors