Sleep Duration and Risk of Ischemic Stroke in Postmenopausal Women
StrokePublished 18 July 2008Open access
Jiu‐Chiuan Chen, Robert L. Brunner, Hong Ren, Sylvia Wassertheil‐Smoller, Joseph C. Larson, Douglas W. Levine
Citations183
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TL;DR
Habitual sleep patterns are important neurobehavioral determinants of risk for ischemic stroke in postmenopausal women, and the underlying neurobiology and mechanistic mediators for the putative adverse effect of long sleep (≥9 hours/night) need further elucidation.
Abstract
BACKGROUND AND PURPOSE: Many studies have shown a U-shape association between sleep duration and mortality, but epidemiological evidence linking cardiovascular diseases with habitual sleep patterns is limited and mixed. METHODS: We conducted a prospective study on 93 175 older women (aged 50 to 79 years) in the Women's Health Initiative Observational study cohort to examine the risk of ischemic stroke in relation to self-reported sleep duration. Cox models were used to investigate the putative associations, adjusting for multiple sociodemographic and lifestyle factors, depression, snoring, sleepiness symptoms, and other cardiovascular disease-related clinical characteristics. RESULTS: At baseline, 8.3% of subjects had reported their sleep duration as or=9 hours/night). After an average of 7.5 years of follow-up, 1166 cases of ischemic stroke had occurred. Multivariable-adjusted relative risk (RR) and 95% CI for ischemic stroke (using a sleep time of 7 hours/night as the reference) were 1.14 (0.97, 1.33), 1.24 (1.04, 1.47), and 1.70 (1.32, 2.21) for women reporting or=9 hours of sleep. A modestly stronger association with sleep duration or=9 hours/night) need further elucidation.
Keywords
PsychologyMedicine
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