Department of Epidemiology and Medical Statistics, Xiangya School of Public Health, Central South University, Xiangya Road 110, Changsha 410078, China.
Department of Epidemiology and Medical Statistics, Xiangya School of Public Health, Central South University, Xiangya Road 110, Changsha 410078, China.
J Affect Disord. 2022 Dec 15;319:252-259. doi: 10.1016/j.jad.2022.09.051. Epub 2022 Sep 22.
The adverse impact of depressive symptoms on adolescents' physical and psychological health is becoming increasingly prominent. This study aims to examine the association between sleep duration, cognitive function, and depressive symptoms among Chinese adolescents.
This study used data on a sample of 3724 adolescents collected from the China Family Panel Studies (CFPS). The multivariate logistic regression was conducted to estimate the association between sleep duration, cognitive function (measured by mathematics and vocabulary), and depressive symptoms among Chinese adolescents; the mediating effects of cognitive function were calculated by mediating model.
The study found that approximately 6.49 % of Chinese adolescents had depressive symptoms, with an average CES-D8 score of 4.27 (SD: 3.11). Adolescents who reported a sleep duration of <6 h/night (OR = 2.34; 95 % CI = 1.30, 4.24) were at a higher risk of depressive symptoms, and the adolescents who had higher mathematics scores (>75 %) were more likely to be at a lower risk of depressive symptoms. Besides, the cognitive function competitively mediated the effect of sleep duration on depressive symptom (indirect effect = 0.043; 95 % CI = 0.023, 0.064).
This is a cross-sectional study; all questions were self-reported; the sleep variable only included the sleep duration.
Our study highlights that short sleep duration might increase the risk of depressive symptoms, and increasing cognitive function might reduce the occurrence of depressive symptoms in Chinese adolescents. The results displayed that sleep duration had a negatively direct effect on depressive symptoms, but the indirect effects of sleep duration on depressive symptoms via the cognitive function (i.e., mathematics and vocabulary tests) were significantly positive, indicating that the relationship between sleep duration and depressive symptoms was competitively mediated by cognitive function.
抑郁症状对青少年身心健康的不良影响日益突出。本研究旨在探讨中国青少年睡眠时长、认知功能与抑郁症状之间的关系。
本研究使用了中国家庭追踪调查（CFPS）的数据，对 3724 名青少年进行了调查。采用多变量逻辑回归估计了中国青少年睡眠时长、认知功能（数学和词汇测试）与抑郁症状之间的关系；通过中介模型计算了认知功能的中介效应。
研究发现，约有 6.49%的中国青少年有抑郁症状，CES-D8 平均得分为 4.27（SD=3.11）。报告每晚睡眠时长<6 小时的青少年（OR=2.34；95%CI=1.30，4.24）患抑郁症状的风险更高，而数学成绩较高（>75%）的青少年患抑郁症状的风险更低。此外，认知功能竞争地介导了睡眠时长对抑郁症状的影响（间接效应=0.043；95%CI=0.023，0.064）。
这是一项横断面研究；所有问题均为自我报告；睡眠变量仅包括睡眠时长。
本研究强调了短睡眠时长可能增加抑郁症状的风险，提高认知功能可能降低中国青少年抑郁症状的发生。结果显示，睡眠时长与抑郁症状之间存在负向直接关系，但睡眠时长通过认知功能（即数学和词汇测试）对抑郁症状的间接效应呈显著正相关，表明睡眠时长与抑郁症状之间存在竞争中介作用。
