Exposure to domestic violence and depressive symptoms in Chinese adolescents: Sleep problems as a mediator

Exposure to domestic violence has been shown to be an important risk factor of depression in western studies, but has received less attention in Chinese context. Additionally, the underlying mechanism of its link with depression has not been fully studied. With a longitudinal design, we examined the mediating role of sleep problems between exposure to domestic violence and depressive symptoms in Chinese adolescents, and further considered potential age and gender differences in the direct and indirect pathways. Participants were recruited from primary and junior high schools in China and were surveyed across two waves with a 6-month interval. There were 1949 participants at Wave 1 and 1283 at Wave 2. Structural equation model was conducted to examine the mediating role of sleep problems in the association between exposure to domestic violence and depressive symptoms. Multigroup analyses were applied to test potential age and gender differences in the process. Participants' exposure to domestic violence predicted increasing sleep problems, which further predicted more depressive symptoms. Age and gender moderated the indirect pathway from exposure to domestic violence to depressive symptoms through sleep problems, such that the mediating effects of sleep problems were significantly stronger in early-age adolescents and girls than middle-age ones and boys. Parents should avoid the use of corporal punishment and protect their children from domestic violence. For adolescents who have underwent domestic violence, parents and clinicians might consider to decrease their depressive symptoms by ameliorating sleep problems, especially for the early-age adolescents and girls.