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Background: Although older people, particularly those with health problems, often experience poor sleep, few studies have examined sleep efficacy in this population. In addition, there have been few efforts to measure how daily fluctuations in individual and environmental characteristics affect sleep efficacy. Methods: In this cross-sectional study, we used non-wearable actigraphy to measure the effect of demographic, environmental, and daily clinical factors on sleep efficacy over 14 days. Participants were older inpatients, some of who had communication difficulties, receiving rehabilitation in a hospital in Japan. Illumination levels, noise, excretion, and patient subjective mood and stress were measured daily. Sleep data were collected using a sleep monitor attached to the patient’s bed. Multiple regression analysis was used to identify predictors of sleep efficacy. Findings: Analysis was conducted for 1008 records from 76 participants. Older age, being female, regularly taking sleep medication, frequent nighttime urination, and being post-stroke were significant predictors of poor sleep efficacy. Environmental factors did not affect sleep efficacy. Newly admitted patients reported better sleep efficacy (age, β=-0･38, p |
