title: Prevalence and polysomnographic correlates of insomnia comorbid with medical disorders.
abstract: OBJECTIVE
  To determine the prevalence and polysomnographic correlates of insomnia in subjects with self-reported medical disorders.
  
  
  METHODS
  Prospective cross-sectional study.
  
  
  METHODS
  Community-based sample of 3282 men and women aged 18 to 65 years old, with a subset who underwent polysomnography.
  
  
  METHODS
  Self-reported measures of sleep habits and current health, and polysomnographic sleep variables.
  
  
  RESULTS
  The prevalence of insomnia was 21.4%. The adjusted odds of insomnia were 2.2 times as high in persons with any medical disorders as in those without medical disorders. Specifically, odds of insomnia were higher in people with heart disease (OR = 1.6 [95% CI: 1.2-23], P = 0.004), hypertension (1.5 [12-18], P < 0.001), diabetes (1.4 [105-20], P = 0.04), stomach ulcers (2.1 [1.6-2.7], P < 0.001), arthritis (1.8 [1.5-2.2], P < 0.001), migraine (1.8 [1.5-2.1], P < 0.001), asthma (1.6 [1.3-2.0], P = 0.04), COPD (1.9 [1.5-2.5], P < 0.001), neurological problems (2.0 [1.5-2.7], P < 0.001), and menstrual problems (1.7 [1.3-2.1], P < 0.001) than in people without these disorders. Prevalence of insomnia increased with increasing number of medical disorders. However, polysomnographic sleep was not significantly different in persons with or without medical disorders for most disorders assessed.
  
  
  CONCLUSIONS
  This large population-based study suggests that insomnia is highly prevalent in diverse chronic medical disorders. However, polysomnographic evidence of disturbed sleep is present in only a subset of comorbid insomnia populations.
authors: 1Department of Medicine, Southern Arizona Veterans Affairs Health Care System (SAVAHCS), Tucson, AZ 85723 , USA. rohit.budhiraja@va.gov
authors: Rohit
authors: R
authors: Budhiraja
authors: Thomas
authors: T
authors: Roth
authors: David W
authors: DW
authors: Hudgel
authors: Pooja
authors: P
authors: Budhiraja
authors: Christopher L
authors: CL
authors: Drake
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002908:Chronic Disease; D015897:Comorbidity; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008824:Michigan / Q000453:epidemiology; D008875:Middle Aged; D017286:Polysomnography; D015995:Prevalence; D007319:Sleep Initiation and Maintenance Disorders / Q000150:complications / Q000453:epidemiology* / Q000503:physiopathology*; D055815:Young Adult