Adolescents with a history of suicide exposure, defined as experiencing the suicide death of a family member, friend, or other acquaintances, are more likely to experience mental health issues such as depression or anxiety. This study aimed to explore prevalence rates and the network of adolescents' suicide exposure, depression, and anxiety symptoms, and to clarify the correlations between suicide exposure and symptoms of depression and anxiety. A total of 8,957 adolescents were included in this cross-sectional study. Data regarding general information, symptoms of depression and anxiety, and suicide exposure were collected from mid-September to early October 2021. Network analysis was employed to assess relationships between suicide exposure and individual symptoms of both depression and anxiety. Central symptoms were identified by strength; the flow network was visualized to identify symptoms directly related to suicide exposure. The prevalence rates of suicide exposure, depression, and anxiety were 5.28%, 12.87%, and 10.48%. Results indicated that suicide exposure was associated with both depression and anxiety, and had the strongest positive association with suicidal ideation. Central symptoms of the network were sad mood, nervousness, fatigue, irritability, and uncontrollable worry. Bridge symptoms were suicidal ideation and irritability. Appetite changes, suicidal ideation, uncontrollable worry, sleep difficulties, and irritability were symptoms directly related to suicide exposure. There were significant inter-symptom associations between suicide exposure, depression, and anxiety in adolescents. It is recommended that future studies explore whether targeted interventions and long-term monitoring concerning these inter-symptom associations can protect adolescents with suicide exposure.
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