Abstract
Purpose
Self-harm in adolescents is prevalent and is the most significant predictor of future self-harm and suicide. Longitudinal data on the incidence and predictors of repeat self-harm in the general population of adolescents are limited. This study investigated 1-year incidence and psychosocial predictors of repeat self-harm in Chinese adolescents.
Methods
Shandong Adolescent Behavior and Health Cohort is a longitudinal study of behavior and health in adolescents in Shandong Province, China. Of 7072 participants who were assessed in 2015 and again 1 year later in 2016, 1879 reported a history of self-harm at the baseline survey and were included for this analysis. A self-administered structured questionnaire was used to assess behavioral and emotional problems, sleep, life stress, previous history of self-harm and suicidal thought, and family factors at baseline and self-harm at 1-year follow-up.
Results
Mean age of the sample was 14.86 (SD 1.36) years and 54.6% were female. At 1-year follow-up, 22.1% participants engaged in repeat self-harm. Multiple logistic regression analyses showed that female gender (OR 1.45, 95% CI 1.11–1.89), alcohol use (OR 1.95, 95% CI 1.48–2.57), frequent nightmares (OR 1.61, 95% CI 1.14–2.28), elevated depression score (OR 1.59, 95% CI 1.05–2.42), and prior suicidal thought (OR 1.79, 95% CI 1.37–2.34) were independently and significantly associated with an increased risk of repeat self-harm.
Conclusion
More than one in five Chinese adolescents who had a history of self-harm engaged in self-harm at 1-year follow-up. Multiple psychosocial factors including female gender, alcohol use, frequent nightmares, depression, and prior suicidal thought appeared to be significant predictors of repeat self-harm. Our findings highlight the importance of comprehensive psychosocial assessment and intervention of repeat self-harm in adolescents.
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Data availability
Data available upon request.
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Acknowledgements
The authors would like to thank staff members at Yanggu County Center for Disease Control and Prevention, Lijin County Center for Disease Control and Prevention, and Zoucheng City Center for Disease Control and Prevention, Shandong Province, China, and all participating class teachers for their help with data collection and all students for their voluntarily participating in the study.
Funding
This work was funded in part for data collection by National Natural Science Foundation of China (Grant number 81573233).
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XL conceptualized the study, performed data analysis, and drafted the manuscript. Z-ZL participated in the study design, collected data, managed data, and reviewed and revised the manuscript. C-XJ contributed to the study design, supervised data collection and data management, and reviewed and revised the manuscript.
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Liu, X., Liu, ZZ. & Jia, CX. Repeat self-harm among Chinese adolescents: 1-year incidence and psychosocial predictors. Soc Psychiatry Psychiatr Epidemiol 56, 1979–1992 (2021). https://doi.org/10.1007/s00127-021-02085-x
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DOI: https://doi.org/10.1007/s00127-021-02085-x