The relationship between sleep duration and activities of daily living (ADL) disability in the Chinese oldest-old: A cross-sectional study

• Published in: PeerJ (San Francisco, CA) Vol. 11; p. e14856
• Main Authors: Wang, Zhaoping, Ni, Xiaolin, Gao, Danni, Fang, Sihang, Huang, Xiuqing, Jiang, Mingjun, Zhou, Qi, Sun, Liang, Zhu, Xiaoquan, Su, Huabin, Li, Rongqiao, Huang, Bin, Lv, Yuan, Pang, Guofang, Hu, Caiyou, Yang, Ze, Yuan, Huiping
• Format: Journal Article
• Language: English
• Published: United States PeerJ. Ltd 14.02.2023; PeerJ, Inc; PeerJ Inc
• Subjects: Activities of Daily Living; ADL disability; Age; Aged, 80 and over; Analysis; Body mass index; China - epidemiology; Cross-Sectional Studies; Dementia; Disease; East Asian People; Epidemiology; Ethnicity; Female; Females; Gender; Geriatrics; Humans; Male; Males; Mortality; Older people; Oldest-old; Population; Prevalence of ADL disability; Psychiatry and Psychology; Public Health; Regression analysis; Sleep; Sleep Duration; Variables; China; Oldest-old; ADL disability; Prevalence of ADL disability; Sleep duration
• ISSN: 2167-8359; 2167-8359
• DOI: 10.7717/peerj.14856

To investigate the relationship between sleep duration and activities of daily living (ADL) disability, and to explore the optimal sleep duration among oldest-old Chinese individuals. In this cross-sectional study, 1,798 participants (73.2% female) were recruited from Dongxing and Shanglin in Guangxi Zhuang Autonomous Region, China in 2019. The restricted cubic spline function was used to assess the dose-response relationship between sleep duration and ADL disability, and the odds ratios (ORs) of the associations were estimated by logistic regression models. The overall prevalence of ADL disability was 63% (64% in females and 58% in males). The prevalence was 71% in the Han population (72% in females and 68% in males), 60% in the Zhuang population (62% in females and 54% in males) and 53% in other ethnic population (53% in females and 53% in males). A nonlinear relationship between sleep duration and ADL disability was observed. Sleep duration of 8-10 hours was associated with the lowest risk of ADL disability. Sleep duration (≥12 hours) was associated with the risk of ADL disability among the oldest-old individuals after adjusting for confounding factors (OR = 1.47, 95% CI [1.02, 2.10],  < 0.05). Sleep duration more than 12 hours may be associated with an increased risk of ADL disability in the oldest-old individuals, and the optimal sleep duration among this population could be 8-10 h.