Association of depression and sleep quality with frailty: a cross-sectional study in China

• Published in: Frontiers in public health Vol. 12; p. 1361745
• Main Authors: Zhang, Yue, Yu, Ge, Bai, Wei, Wu, Songyu, Geng, Xiaohan, Zhang, Wangyi, Liu, Yihang, Meng, Yujiao, Gao, Junling, Li, Wenjun, Kou, Changgui
• Format: Journal Article
• Language: English
• Published: Switzerland Frontiers Media S.A 2024
• Subjects: Aged; Aged, 80 and over; China - epidemiology; community; Cross-Sectional Studies; depression; Depression - epidemiology; Female; Frail Elderly - psychology; Frail Elderly - statistics & numerical data; Frailty; Humans; Independent Living; Male; mediation effect; Middle Aged; older adults; Sleep Quality; Surveys and Questionnaires; China; older adults; frailty; mediation effect; depression; community; sleep quality
• ISSN: 2296-2565; 2296-2565
• DOI: 10.3389/fpubh.2024.1361745

With the rapid growth of global aging, frailty has become a serious public health burden, affecting the life quality of older adults. Depressive symptoms (depression hereafter) and sleep quality are associated with frailty, but the pathways in which sleep quality and depression affect frailty remain unclear. This cross-sectional study included 1866 community-dwelling older adults. Demographic characteristics and health-related data of them was collected, and we also assessed frailty, depression, and sleep quality. Descriptive statistics were carried out and ordinal logistic regression analysis was used to identify the factors correlated with frailty. Spearman correlation analysis and mediation analysis were employed to assess associations between sleep quality, depression and frailty. Two-sided  < 0.05 was considered as significant. The results showed that 4.1% older adults were frail and 31.0% were pre-frail. Ordinal logistic regression showed that age, consumptions of vegetables, exercise, sleep quality, depression, number of chronic diseases, chronic pain, and self-rated health were correlated with frailty. Spearman correlation analysis revealed that frailty was associated with depression and sleep quality. There was a mediation effect that sleep quality was a significant and positive predictor of frailty (total effect = 0.0545, 95% boot CI = 0.0449-0.0641), and depression was a mediator between sleep quality and frailty (mediation effect = 60.4%). Depression and poor sleep quality may be early indicators of frailty in older adults. Improving the sleep quality and psychological state of older adults can improve frailty, which is beneficial for healthy aging.