Sleep quality, daytime sleepiness, and risk of falling: results from an exploratory cross-sectional study.

Purpose: There is growing recognition of the importance of managing sleep disorders in the elderly, particularly given their complexity within a multidimensional framework. The aim of the present study is to investigate whether sleep quality and daytime sleepiness are associated with the risk of falls in older adults.

Methods: This study included patients aged 75 years or older who were consecutively evaluated at the Geriatric Service, University Hospital of Monserrato, Cagliari, Italy. Participants underwent geriatric assessment, including sleep analysis using the Pittsburgh Sleep Quality Index (PSQI), and the Epworth Sleepiness Scale (ESS), as well as an assessment of risk of falls with Performance Oriented Mobility Assessment (POMA).

Results: The study included 206 subjects, of whom 70.4% were women, with a median age of 83 years. A total of 141 participants (68.4%) had poor sleep quality, and 43 (20.9%) had excessive daytime sleepiness (EDS). Among people at high risk of falls, 85 participants had bad sleep quality, and 24 a satisfying one (χ²: 8.23, p = 0.0029); additionally, 77 participants did not exhibit daytime sleepiness, while 32 did (χ²: 9.03, p = 0.0027). To further explore these results, we designed logistic regressions, considering dichotomized PSQI and dichotomized ESS as independent variables, and dichotomized POMA as the dependent variable, and finally adjusted them for confounders. The adjusted model for PSQI yielded OR: 2.04 (95%CI 1.02-4.10), and the adjusted model for ESS yielded OR: 2.56 (95%CI 1.17-5.91).

Conclusions: Our study demonstrated that an increased estimated risk of falling is associated with poor sleep quality and EDS in older adults, independently of the confounders.