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Article

Associations of Sleep Quality and Frailty among the Older Adults with Chronic Disease in China: The Mediation Effect of Psychological Distress

1
School of Health Care Management, Cheeloo College of Medicine, Shandong University, NHC Key Laboratory of Health Economics and Policy Research, Jinan 250012, China
2
School of Public Health, Cheeloo College of Medicine, NHC Key Lab of Health Economics and Policy Research, Shandong University, Jinan 250012, China
3
China Center for Health Development Studies, Peking University, Beijing 100191, China
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(14), 5240; https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17145240
Received: 17 June 2020 / Revised: 13 July 2020 / Accepted: 19 July 2020 / Published: 20 July 2020
Frailty affects the elderly and leads to adverse health outcomes. Preliminary evaluations have suggested that sleep quality and psychological distress are predictors of frailty among older adults. However, the mechanisms by which sleep quality affect frailty had not been fully addressed in the previous research. This study aimed to explore the mediation effect of psychological distress on the association between sleep quality and frailty among the elderly with chronic diseases in rural China. A total of 2346 old adults were included in the analysis. Frailty status was measured by Fried Phenotype criteria. Sleep quality was assessed by Pittsburgh Sleep Quality Index (PSQI), and psychological distress was examined by Kessler Psychological Distress Scale (K10). Ordinal logistic regressions were performed to assess the relationships between sleep quality and frailty. Mediation test was also conducted by bootstrap method. The prevalence rate of frailty among the elderly with chronic diseases was 21% in rural China. Compared with the elder of robust status, respondents identified as having frailty have lower SES, less vigorous physical activity, and worse self-reported health status. Poor sleep quality was a significant predictor of frailty with mediators (OR = 1.44, 95% CI = 1.19–1.76). Mediation analysis suggested that psychological distress mediated 41.81% of total effect between sleep quality and frailty. This study indicated that poor sleep quality was significantly related to frailty, and psychological was a mediator of this association. However, we could not investigate causal relationships between variables since this was one cross-sectional study. These findings suggested that an early detection of sleep problems and also psychological disorders should be taken to prevent frailty among the rural older adults in China. View Full-Text
Keywords: frailty; sleep quality; psychological distress; mediation effect frailty; sleep quality; psychological distress; mediation effect
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MDPI and ACS Style

Fu, P.; Zhou, C.; Meng, Q. Associations of Sleep Quality and Frailty among the Older Adults with Chronic Disease in China: The Mediation Effect of Psychological Distress. Int. J. Environ. Res. Public Health 2020, 17, 5240. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17145240

AMA Style

Fu P, Zhou C, Meng Q. Associations of Sleep Quality and Frailty among the Older Adults with Chronic Disease in China: The Mediation Effect of Psychological Distress. International Journal of Environmental Research and Public Health. 2020; 17(14):5240. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17145240

Chicago/Turabian Style

Fu, Peipei, Chengchao Zhou, and Qingyue Meng. 2020. "Associations of Sleep Quality and Frailty among the Older Adults with Chronic Disease in China: The Mediation Effect of Psychological Distress" International Journal of Environmental Research and Public Health 17, no. 14: 5240. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17145240

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