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Basic Research Article

Using decision tree to predict non-suicidal self-injury among young adults: the role of depression, childhood maltreatment and recent bullying victimization

Uso de árbol de decisión para predecir la autolesión no suicida entre adultos jóvenes: el papel de la depresión, el maltrato infantil y la victimización reciente por acoso escolar

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Article: 2322390 | Received 11 Dec 2023, Accepted 13 Feb 2024, Published online: 06 Mar 2024

Figures & data

Figure 1. Co-occurrence between different types of child maltreatment and bully victimization and the ROC curves of the CHAID model for DEP and No-DEP models. A: All the bullying means the self-report bullying victimization in past year. B: EA. Emotional Abuse. PA. Physical Abuse. SA. Sexual Abuse. EN. Emotional Neglect. PN. Physical Neglect. The CTQ cut-off scores were as follows: PA ≥ 8, SA ≥ 6, EA ≥ 9, PN ≥ 8, and EN ≥ 10. C: the cut-off scores of PHQ-9 as 10.

Figure 1. Co-occurrence between different types of child maltreatment and bully victimization and the ROC curves of the CHAID model for DEP and No-DEP models. A: All the bullying means the self-report bullying victimization in past year. B: EA. Emotional Abuse. PA. Physical Abuse. SA. Sexual Abuse. EN. Emotional Neglect. PN. Physical Neglect. The CTQ cut-off scores were as follows: PA ≥ 8, SA ≥ 6, EA ≥ 9, PN ≥ 8, and EN ≥ 10. C: the cut-off scores of PHQ-9 as 10.

Table 1. Characteristics of the study population by past year NSSI.

Table 2. Univariable and multivariable logistic regression model to identify variables associated with reporting NSSI in the previous year.

Table 3. Multinomial logistic regression to predict the severity of NSSI (Reference Group: NSSI Severity = ‘Never’).

Figure 2. Past year NSSI with and without depression symptom. N, Node, CTQ-EA, emotional abuse, CTQ-PA, physical abuse, CTQ-EN, emotional neglect, CTQ-SA, sexual abuse, All the p values were adjusted by Bonferroni corrections.

Figure 2. Past year NSSI with and without depression symptom. N, Node, CTQ-EA, emotional abuse, CTQ-PA, physical abuse, CTQ-EN, emotional neglect, CTQ-SA, sexual abuse, All the p values were adjusted by Bonferroni corrections.

Table 4. Model parameters of chi-square automatic interaction detection Decision Tree.

Supplemental material

Supplementary Appendix 2.docx

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Supplementary Appendix 1.pdf

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