Associations of sleep duration and sleep quality with life satisfaction in elderly Chinese: The mediating role of depression.
This study investigated whether sleep duration and quality were related to life satisfaction (LS) among older Chinese adults and whether depression mediated those relationships. Cross-sectional data from the aging arm of the Rugao Longevity and Aging Study were used. Sleep duration, sleep quality, depression, LS and covariates were analyzed using logistic regressions. To assess the potential mediation of depression on the association between sleep duration and quality and LS, Aroian tests were used. Of 1756 older Chinese adults aged 70-84 years, 90.7% of the men and 83.3% of the women reported being satisfied with their lives. After adjusting for covariates, older adults who slept ≤6h per night were more likely to suffer from life dissatisfaction compared with those who slept 7-8h (OR=2.67, 95% CI 1.86-3.79), and individuals who slept poorly were almost 2 times (OR=2.91, 95% CI 2.16-3.91) more likely to have life dissatisfaction. The Aroian tests confirmed that these relationships were partially mediated by depression (p<0.001). Between short sleep and LS, the mediating effect of depression accounted for 13.9% of the total effects. Moreover, the mediating effect of depression on the association between sleep quality and LS was 13.3%. Short sleep duration and poor sleep quality were inversely associated with LS, and the relationships were partially mediated by depression. Our study suggests that both sleep and depression status are important factors for LS among the elderly.
Key Laboratory of Arrhythmias of the Ministry of Education of China, Tongji University School of Medicine, Shanghai 200092, China; Department of Pathology and Pathophysiology, Tongji University School of Medicine, Shanghai 200092, China.
Ting-Fan
TF
Zhi
Unit of epidemiology, State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University 200433 Shanghai, China.
Xun-Ming
XM
Sun
Department of Neurology, Beijing Chaoyang Hospital, Capital University of Medical Sciences, Beijing 100020, China.
Shu-Juan
SJ
Li
Department of Cardiology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, 200092 Shanghai, China.
Qun-Shan
QS
Wang
Department of Neurology, First Affiliated Hospital, Xinjiang Medical University, Urumqi 830011, China.
Jian
J
Cai
Unit of epidemiology, State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University 200433 Shanghai, China.
Lin-Zi
LZ
Li
Unit of epidemiology, State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University 200433 Shanghai, China.
Yan-Xun
YX
Li
Key Laboratory of Arrhythmias of the Ministry of Education of China, Tongji University School of Medicine, Shanghai 200092, China; Department of Pathology and Pathophysiology, Tongji University School of Medicine, Shanghai 200092, China.
Min-Jie
MJ
Xu
Rugao People's Hospital, Rugao 226500 Jiangsu, China.
Yong
Y
Wang
Rugao People's Hospital, Rugao 226500 Jiangsu, China.
Xue-Feng
XF
Chu
Rugao People's Hospital, Rugao 226500 Jiangsu, China.
Zheng-Dong
ZD
Wang
Key Laboratory of Arrhythmias of the Ministry of Education of China, Tongji University School of Medicine, Shanghai 200092, China; Department of Pathology and Pathophysiology, Tongji University School of Medicine, Shanghai 200092, China. Electronic address: xiaoyanjiang001@163.com.
Xiao-Yan
XY
Jiang
D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D044466:Asian People; D002681:China; D003430:Cross-Sectional Studies; D003863:Depression / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D010549:Personal Satisfaction; D012890:Sleep; D013997:Time Factors
Depression; Elderly; Life satisfaction; Sleep duration; Sleep quality