Relationship between peer victimization and non-suicidal self-injury functions in adolescents with unipolar and bipolar depression： the pathway of loneliness

BackgroundNon-suicidal self-injury （NSSI） behavior has become a major public health concern and can have significant implications for the physical and mental health of adolescents. Peer victimization is a risk factor for adolesents to have NSSI behavior， so exploring the relationship and underlying mechanism between peer victimization and NSSI functions will provide a promising strategy for the prevention and intervention of NSSI behavior.ObjectiveTo investigate the relationship between peer victimization and NSSI functions in adolescents with unipolar and bipolar depression， so as to provide references for the intervention of NSSI behavior in adolescent patients with unipolar and bipolar depression.MethodsUsing multi-stage stratified sampling， 940 adolescents with unipolar and bipolar depression who met the Diagnostic and Statistical Manual of Mental Disorders， fifth edition （DSM-5） criteria for bipolar depressive episodes or depressive disorders were selected from 14 psychiatric hospitals in China. All part