期刊
JOURNAL OF THE AMERICAN GERIATRICS SOCIETY
卷 49, 期 5, 页码 639-641出版社
BLACKWELL SCIENCE INC
DOI: 10.1046/j.1532-5415.2001.49125.x
关键词
sleep disturbances; tiredness; mortality; older
OBJECTIVES: To cross-validate, in a secondary analysis, the observation that daytime sleepiness is associated with an increased risk of death. DESIGN: Prospective cohort study. SETTING: Canada, a nationally representative sample of people age 65 and older. PARTICIPANTS: Nine thousand and eight community-dwelling participants in the Canadian Study of Health and Aging. MEASUREMENTS: Exposures: self-reported sleep disturbances. Outcomes: Cox hazard ratios (HRs) for death. RESULTS: The unadjusted analysis showed a small increased risk of death from daytime sleepiness (HR = 1.89; 95% confidence interval (CI) = 1.44-2.46), but this finding did not persist in a multivariate model adjusted for age, depression, cognition, comorbid illness, and function. CONCLUSION: Daytime sleepiness itself is not associated with an increased risk of death when other factors are taken into account. Daytime sleepiness may be a proxy for other morbid conditions and therefore for overall tiredness.
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