Sleep duration and bedtime in relation to depressive symptoms among older adults
Objective To explore the independent and interactive effects of sleep duration and bedtime on depressive symptoms among middle aged and older adults in China,and provide references for the prevention and intervention measures of depressive symptoms.Methods Using data from the 2018 China family panel studies(CFPS),13 662 individuals aged 50 years and above were selected as the analytical sample.A preliminary exploration of the nonlinear relationships between sleep duration,bedtime,and depressive scores was conducted based on the generalized additive model(GAM).Further analysis of the correlations between sleep duration,bedtime their interaction,and depression symptoms was performed using multivariate logistic regression model,along with subgroup analyses by gender and urban-rural classification.Results 34.83％of middle-aged and older adults in study had depressive symptoms.Sleep duration＜6 hours and abnormal bedtime(earlier than 21:00 or later than 23:00)were independently associated with depressive symptoms.There was an interaction effect between sleep duration and bedtime on the risk of depressive symptoms.Those with abnormal bedtime and sleep duration＜6 hours had the highest risk(OR=1.32,95％CI:1.08-1.60).Further subgroup analyses by gender and residence confirmed the above findings.Conclusions Healthcare professionals and caregivers should pay attention to both sleep duration and bedtime among middle-aged and older adults.By implementing effective intervention measures,the occurrence of depressive symptoms can be reduced.
万方数据
维普
