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September 8, 2026Child and Adolescent Psychiatry and Mental HealthOpen Access

Psychological risk factors for non-suicidal self-injury in sexually traumatized adolescents: a cross-sectional analysis with random forest classification

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Authors

ARAmirhossein RasouliESErfan SalehiMRMaryam Raissi

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Overview

Cross-sectional analysis reveals posttraumatic stress symptoms as primary predictors of non-suicidal self-injury in traumatized adolescents, highlighting the value of trauma-focused care.

Key Points

  • To examine the individual and synergistic roles of posttraumatic stress symptoms, depression, anxiety, and sleep quality in predicting non-suicidal self-injury among sexually traumatized adolescents.
  • Cross-sectional study evaluating 448 Iranian adolescents (aged 14–18 years; 60.7% female) with confirmed sexual abuse histories from Tehran psychology clinics using Persian-language self-report measures.
  • Conducted hierarchical logistic regression to determine incremental contributions of predictors and implemented a Random Forest classifier with a 70/30 train-test split (train n = 313, test n = 135) alongside Permutation Importance and SHAP analyses.
  • Non-suicidal self-injury was reported by 39.7% of adolescents (n = 179), with all evaluated psychological predictors demonstrating significant positive bivariate correlations with NSSI (r range 0.18 to 0.36, p < 0.01).
  • Hierarchical logistic regression identified posttraumatic stress symptoms as the primary predictor (OR = 1.07, p < 0.001), explaining 17.9% of the variance while rendering other factors nonsignificant.
  • The Random Forest model achieved 74.07% accuracy on the test set, identifying overall PTSS (mean accuracy decrease = 0.103) and avoidance/numbing symptoms (0.080) as leading features, while SHAP analysis revealed substantial influence from sleep difficulties (mean |SHAP| = 0.076).

Cite This Study

Rasouli et al. (2026) studied this question.

synapsesocial.com/papers/6a9fd76758e84d0ff5b46124https://doi.org/10.1186/s13034-026-01175-5
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Prevalence and risk factors of sleep disturbances among adolescents with non-suicidal self-injury: a systematic review and meta-analysis2026 · 1 citations
  2. 2Factors Associated with Non-Suicidal Self-Injury Among Middle and High School Students in China Using a Random Forest Classifier.2025
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  4. 4Correlation Analysis of Non-Suicidal Self-Injury Behavior with Childhood Abuse, Peer Victimization, and Psychological Resilience in Adolescents with Depression2024 · 14 citations
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