title: Factors associated with poor sleep and health-related quality of life.
abstract: OBJECTIVE
  The aim of the study was to establish factors associated with poor sleep and to assess the relationship between self-evaluated sleep quality and health-related quality of life.
  
  
  METHODS
  Sleep complaints were evaluated using Basic Nordic Sleep Questionnaire, and health-related quality of life was assessed by SF-36. Subjective data about sleep quality were obtained from 1602 randomly selected persons: 600 males and 1002 females, aged 35-74 years. SF-36 was filled in by 1016 persons: 379 males and 637 females. Health status was evaluated by Perceived Health Questionnaire. The odds ratios of poor sleep were calculated using binary logistic regression analysis.
  
  
  RESULTS
  Among males poor self-evaluated health, frequent stress events, regular nighttime awakenings, and sleep latency period longer than 15 min in workdays were significant predictors of poor sleep. Among females, duration of sleep shorter than 7 h, frequent stress events, poor self-evaluated health, sleep latency period longer than 15 min in workdays, and regular nighttime awakenings predicted poor sleep. Poor sleepers, as compared with good ones, had poorer health-related quality of life.
  
  
  CONCLUSIONS
  Poor perceived health, frequent stress events, regular nighttime awakenings, and sleep latency period longer than 15 min were indicated as significant predictors of poor sleep. Poor sleep worsened health-related quality of life in all domains of SF-36.
authors.affiliation: Institute of Psychophysiology and Rehabilitation, Kaunas University of Medicine, Vydūno 4, 00135 Palanga, Lithuania.
authors.forename: Jurgita
authors.initials: J
authors.lastname: Andruskiene
authors.forename: Giedrius
authors.initials: G
authors.lastname: Varoneckas
authors.forename: Arvydas
authors.initials: A
authors.lastname: Martinkenas
authors.forename: Vilius
authors.initials: V
authors.lastname: Grabauskas
mesh_terms: D000328:Adult; D000368:Aged; D003627:Data Interpretation, Statistical; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D008875:Middle Aged; D011788:Quality of Life / Q000523:psychology; D012737:Sex Factors; D012893:Sleep Wake Disorders / Q000175:diagnosis / Q000209:etiology / Q000523:psychology; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires