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Many older adults experience reduced sleep quantity and quality. Older women may be at particularly high risk for sleep disturbances given their heightened risk for dementia, psychiatric problems such as depression or anxiety, and sleep apnea. Most studies of the association between cognition and sleep have been cross-sectional, and few have been designed to follow nondemented aging populations prospectively to clarify the directionality of the association. In this community-based study, investigators assessed cognitive function and sleep patterns during a period of 13 or 15 years in 2474 nondemented women (age ≥65) who were enrolled in the Study of Osteoporotic Fractures.
Global cognitive functioning was assessed with the Mini-Mental State …