title: Frequent napping is associated with excessive daytime sleepiness, depression, pain, and nocturia in older adults: findings from the National Sleep Foundation '2003 Sleep in America' Poll.
abstract: OBJECTIVE
  The objective of this study was to describe the prevalence and correlates of regular napping among older adults.
  
  
  METHODS
  The National Sleep Foundation's "2003 Sleep in America Poll," a 20-minute telephone interview that focused on the topic of "sleep and aging" (N = 1,506 adults 55-84 years of age).
  
  
  RESULTS
  Overall, 15% of respondents reported regular napping, ranging in prevalence from 10% among those 55-64 years of age to 25% among those 75-84 years of age. In addition to older age and a strong association with excessive daytime sleepiness, other factors that independently increased prevalence included a diagnosis of depression, bodily pain, and nocturia.
  
  
  CONCLUSIONS
  Regular napping is common among older adults. Longitudinal studies of napping behavior and health status are needed to establish risk factors other than excessive daytime sleepiness.
authors: Center for Mental Health Services (DJF), Substance Abuse and Mental Health Services Administration, Department of Health and Human Services, Rockville, MD 20857, USA. daniel.foley@samhsa.hhs.gov
authors: Daniel J
authors: DJ
authors: Foley
authors: Michael V
authors: MV
authors: Vitiello
authors: Donald L
authors: DL
authors: Bliwise
authors: Sonia
authors: S
authors: Ancoli-Israel
authors: Andrew A
authors: AA
authors: Monjan
authors: James K
authors: JK
authors: Walsh
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002940:Circadian Rhythm; D015897:Comorbidity; D003430:Cross-Sectional Studies; D003863:Depression / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D006970:Disorders of Excessive Somnolence / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D053158:Nocturia / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D010146:Pain / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D012890:Sleep; D013223:Statistics as Topic; D014481:United States