Abstract: Objective To explore the relationship between sleep disorder and social frailty of the elderly in community, so as to provide reference for prevention and improvement of social frailty in the elderly. Methods The general data questionnaire, Social Frailty Assessing Tool and Pittsburgh Sleep Quality Index (PSQI) scale were surveyed through face-to-face interview with participants at their houses. And the relationship between sleep disorder and social frailty was analyzed. Results A total of 516 valid questionnaires were finally included in this research. The incidence rate of sleep disorder was 42.05%, and the incidence rate of social frailty was 12.79% in the elderly. There were significant differences in the number of chronic diseases, physical exercise, intellectual activities and sleep disorders between the social frailty group and the non-social frailty group (P<0.05 or P＜0.01). Logistic regression analysis showed that sleep disorder was an independent risk factor of social frailty (OR=1.904,95%CI: 1.095-3.311, P=0.022).There were significant differences in the total score of social frailty and the score of each item between the sleep disorder group and the non-sleep disorder group (P<0.05 or P＜0.01). Correlation analysis results showed that the total score of PSQI was moderately positively correlated with social frailty (r=0.429, P<0.001), and the scores of 7 factors of PSQI were positively correlated with social frailty (P<0.05). Conclusions The incidence rates of sleep disorder and social frailty are high in the elderly. Sleep disorder is an independent risk factor of social frailty in the elderly in the community. It is necessary to pay more attention to the sleep quality of the elderly, and to prevent and intervene the sleep disorder of the elderly from multiple dimensions, so as to further improve the health level and quality of life of the elderly population.

Key words: aged, social frailty, sleep disorder, community