title: Association of self-reported sleep and hypertension in non-insomniac elderly subjects.
abstract: OBJECTIVE
  Sleep duration and sleep quality play important roles in the development of hypertension (HT) in middle-aged subjects, with controversial data in elderly. In this study, we investigated the link between HT and self-reported sleep in non-insomniac elderly subjects.
  
  
  METHODS
  We examined 500 participants without insomnia complaints aged 72 ± 1 years. An extensive instrumental evaluation was carried out, including 24-h blood pressure (BP) monitoring and an assessment of nocturnal BP dipping. Sleep duration and quality were evaluated by the Pittsburgh Sleep Quality Index (PSQI). The subjects were stratified into three groups according to sleep duration: short (< 6 h), normal (> 6h to < 8 h), and long (> 8 h) sleepers. A PSQI < 5 defined good sleepers (GS, n = 252), and a PSQI > 5 (n = 248) defined poor sleepers (PS).
  
  
  RESULTS
  PS represented 50% of the subjects, more frequently females. Compared to GS, PS did not differ in terms of HT, BP, baroreflex sensitivity (BRS), and BP dipping. Short, normal, and long sleepers accounted for 28%, 42%, and 30% of subjects, with HT, BP values, BRS, and gender not differing between groups. No relationship was found between nocturnal BP values and self-reported sleep measures. Logistic regression analysis indicated that neither sleep duration nor sleep quality predicts the prevalence of HT, the body mass index being the only factor affecting this association.
  
  
  BACKGROUND
  ClinicalTrials.gov identifiers NCT00759304 and NCT00766584.
  
  
  CONCLUSIONS
  In a sample of non-insomniac elderly subjects, neither sleep duration nor sleep quality affected the prevalence of HT. These data argue against a relationship between self-reported sleep duration and quality and HT in elderly without insomnia.
authors.forename: Emilia
authors.initials: E
authors.lastname: Sforza
authors.forename: Magali
authors.initials: M
authors.lastname: Saint Martin
authors.forename: Jean Claude
authors.initials: JC
authors.lastname: Barthelemy
authors.forename: Frédéric
authors.initials: F
authors.lastname: Roche
mesh_terms: D000368:Aged; D015897:Comorbidity; D005260:Female; D005602:France / Q000453:epidemiology; D015577:Geriatric Assessment / Q000706:statistics & numerical data*; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D008297:Male; D015995:Prevalence; D057566:Self Report; D012737:Sex Factors; D012890:Sleep; D012893:Sleep Wake Disorders / Q000453:epidemiology*; D011795:Surveys and Questionnaires; D013997:Time Factors
keywords: Pittsburgh Sleep Quality Index questionnaire; blood pressure; elderly; hypertension; sleep duration; sleep quality