School of Health Science and Nursing, Wuhan Polytechnic University, Wuhan, China.
Puai Hospital Affiliated to Tongji Medical College of Huazhong Science and Technology University, Wuhan, China.
Exp Aging Res. 2022 Jul-Sep;48(4):387-399. doi: 10.1080/0361073X.2021.2008755. Epub 2021 Dec 30.
The objective of this study was to understand how sleep duration could affect depression among elderly in China.
A total of 7103 individuals aged 60 and older were selected from China Health and Retirement Longitudinal Study. A generalized linear mixed-effects model was used to estimate the relationship between sleep duration and depression, and we performed stratified analyses by age: young-old elderly, old-old elderly and oldest-old elderly.
Short sleep duration significantly incresased CES-D10 depression scores. In addition, the participants with middle sleep duration had higher CES-D10 scores compared to the participants with long sleep duration among young-old elderly, and we found that middle sleep duration was not significantly different from CES-D10 scores after adjustment for demographics, frequencies of activities and Chronic diseases.
These findings suggested that there was a complex association between depression and sleep duration among elderly in China. Different from previous research results on the middle or normal sleep time of the elderly, the middle sleep duration maybe not optimal sleep duration in this study. Investigation of sleep extension to prevent depression may be warranted among the elderly.
本研究旨在探讨睡眠时长如何影响中国老年人的抑郁状况。
本研究选取了来自中国健康与退休纵向研究的 7103 名 60 岁及以上的老年人。采用广义线性混合效应模型来估计睡眠时长与抑郁之间的关系，并按年龄进行分层分析：年轻老年人、年老老年人和最年老年老年人。
短睡眠时长显著增加 CES-D10 抑郁评分。此外，与长睡眠时长相比，年轻老年人中睡眠时长处于中间水平者的 CES-D10 评分更高，而且在调整了人口统计学、活动频率和慢性疾病等因素后，中间睡眠时长与 CES-D10 评分之间没有显著差异。
这些发现表明，中国老年人的抑郁状况与睡眠时长之间存在复杂的关联。与之前关于老年人中值或正常睡眠时间的研究结果不同，在本研究中，中间睡眠时长可能不是最佳的睡眠时长。对于老年人来说，延长睡眠时间以预防抑郁可能是必要的。
