Sleep patterns and mortality among elderly patients in a geriatric hospital

K. Manabe, T. Matsui, M. Yamaya, T. Sato-Nakagawa, N. Okamura, H. Arai, Hidetada Sasaki

Research output: Contribution to journalArticlepeer-review

115 Citations (Scopus)


Background: Sleep disturbance is one of the major and unsolved problems in older people. Most of the previous sleep studies rely on self-reported documents, and memory disturbance in older people might bias sleep complaints and health status. Objective: Sleep disturbances were studied as a mortality risk. Methods: In 272 patients who were aged, infirmed and chronically institutionalized in a skilled-care geriatric hospital, the presence or absence of sleep disturbances were examined by hourly observations of patients over 2 weeks at baseline, and they were prospectively followed up for 2 years to assess mortality. Results: Mortality after 2 years was significantly higher in the nighttime insomnia, daytime sleepiness, and sleep-onset delay groups. Further, adjusted for age, gender and activities of daily living status, the presence of nighttime insomnia and sleep-onset delay remained associated with a higher risk of mortality. Conclusion: Sleep disturbance may be one of the symptoms indicating poor health or functional deficits, and be an independent risk factor for survival. Copyright (C) 2000 S. Karger AG, Basel.

Original languageEnglish
Pages (from-to)318-322
Number of pages5
Issue number6
Publication statusPublished - 2000 Jan 1


  • Active daily life
  • Bedridden patients
  • Geriatric hospital
  • Mortality
  • Sleep study

ASJC Scopus subject areas

  • Ageing
  • Geriatrics and Gerontology


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