Association between sleep and depressive symptoms among primary and secondary school students
Objective To understand the sleep status of primary and secondary school students in China and its relationship with depressive symptoms,so as to provide scientific evidence for improving their sleep status and reducing the incidence of depressive symptoms.Methods Data of 4 232 primary and secondary school students come from China Family Panel Studies(CFPS)data of 2018 and 2020.Sleep status was measured by using self-reported questionnaire,and depressive symptoms was measured by using the Center for Epidemiologic Studies Depression Scale-8 Items(CES-D8).Variance analysis,x2 test,multiple linear regression a-nalysis(MLR)and restricted cubic spline models(RCS)were conducted to analysis the association of sleep status and depressive symptoms among primary and secondary school students.Results From 2018 to 2020,the average sleep duration on weekdays and on weekends among primary and secondary school students was(7.96±1.38)and(9.30±1.51)h,respectively.The prevalence of in-sufficient sleep was 42.75%,11.41%.A total of 1 921 students(45.39%)had a nap,567(13.40%)students napped>1.0 h/d.A total of 2 997 students(70.82%)caught up sleep on weekends,595(14.06%)caught up sleep>2.0 h/d.MLR showed that in-sufficient sleep on weekdays,insufficient sleep on weekends,catching up>2.0 h/d on weekends were risk factors for depressive symptoms of primary and secondary school students(β=0.40,0.39,0.41,P<0.05).RCS showed that sleep duration at night,and napping duration had nonlinear dose-response relationships with depressive symptoms(Ptrend<0.05,Pnon-linear<0.05),with optimal durations of 9.0 h,10.0 h,and 40 min.Conclusions Insufficient sleep at night,inappropriate napping duration and inappropriate weekend catch-up sleep duration are risk factors for depressive symptoms of primary and secondary school students.It is necessary to actively change bad sleep behaviors to reduce the risk of depressive symptoms.