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Non-suicidal self-injury (NSSI) in adolescents is an increasing public health problem in China. We conducted a meta-analysis of studies on NSSI in Chinese adolescents (between 10 and 19 years) to examine factors associated with NSSI. Twenty-five papers including 30 separate studies with 186, 447 participants were included for analysis. The results from a random-effects model showed a weak, but significant overall prediction of NSSI (OR = 1. 734). There were significant associations between the following seven factors and NSSI (ranking by the effect sizes, in descending order): adverse life events (OR = 2. 284), negative coping style (OR = 2. 040), problematic internet use (OR = 2. 023), sleep disturbance (OR = 1. 734), traumatic experiences (OR = 1. 728), problematic parent-child relationship (OR = 1. 585), mental health problems (OR = 1. 578). Additionally, NSSI sample type moderated these effects. These findings highlight factors significantly associated with NSSI in Chinese adolescents. Parent-child relationship and mental health of the only children and left-behind children in China deserve more attention. Systematic Review Registration: https: //www. crd. york. ac. uk/prospero/displayᵣecord. php? ID=CRD42019123508.
Fan et al. (Tue,) studied this question.