Sleep quality in population at high-risk for stroke: a community-based survey

Abstract

Objective To investigate the sleep quality and the risk factors for sleep disorders in population at high-risk for stroke: . Methods A cross-sectional survey was conducted in population at high-risk for stroke: in Water Park and Wangdingdi Communities, Nankai District, Tianjin in March 2016. The residents were divided into either a good sleep group or a sleep disorder group according to the Pittsburgh Sleep Quality Index (PSQI). Multivariate logistic regression analysis was used to determine the risk factors affecting sleep quality. They also divided into a stroke history group and a non-stroke history group according to the high-risk population with or without previous history of stroke. The sleep quality was compared between the 2 groups, and the correlation between sleep disorders and stroke outcomes was analyzed. Results A total of 565 residents at high-risk for stroke were enrolled in the study, and 178 (31.5%) had sleep disorders. The age in the sleep disorder group was significantly older than that in the good sleep group (66.70±8.97 years vs. 62.87±9.46 years; t=4.540, P 2), including 105 (82. 0%) and 23 patients (18. 0%), resectively. The proportion of patients with sleep disorders (78. 3% vs. 35.2%; χ2=14. 251, P<0.001) and the PSQI score (median and four percentile interval: 6 [3-8] vs. 12 [8-18]; Z=-4.392, P<0.001) in the poor outcome group were significantly higher than those in the good outcome group. Conclusions The incidence of sleep disorder is high in the high-risk population, the previous stroke or TIA history and carotid plaques are the independent risk factors for sleep disorder in the high-risk population, and sleep disorder is associated with the poor outcomes of strokes. Therefore, attention should be paid to the sleep quality of this stroke high-risk population and control the risk factors of causing sleep disorders, especially for those with a history of stroke. This will help reduce the risk of stroke. Key words: Stroke; Cerebrovascular Disorders; Sleep Wake Disorders; Risk Factors