ArticleBMJ mental health2026
Differentiating indicators of vulnerability to deliberate self-harm in forensic and non-forensic patients with schizophrenia spectrum disorders: a multinational LASSO-based analysis.
Article in BMJ mental health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundDeliberate self-harm (DSH) is a major public health concern among patients with schizophrenia spectrum disorders (SSDs). Although forensic patients with SSD show high rates of DSH, they remain under-represented in suicidology research, and differences in risk profiles compared with non-forensic patients are poorly understood.
objectiveTo compare sociodemographic, clinical, neuropsychological and criminological correlates of lifetime DSH between forensic and non-forensic patients with SSD and identify subgroup-specific vulnerability markers.
methodsData were drawn from the multinational EU-VIORMED study across five European countries. Participants (N=392) aged 18-65 years with a Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, diagnosis of SSDs completed standardised assessments. Lifetime DSH was measured dichotomously. Separate LASSO logistic regression models identified the strongest correlates of DSH in forensic and non-forensic subsamples.
findingsLifetime DSH prevalence was high in both groups (45.9% forensic; 39.5% non-forensic). In forensic patients, the strongest correlate was comorbid personality disorder (β=0.78), followed by functional impairment (β=0.02-0.26). In non-forensic patients, interpersonal victimisation (β=0.85) was the strongest correlate, followed by personality disorder (β=0.71), male gender (β=0.69), lifetime substance use (β=0.37) and psychopathological indicators (PANSS (Positive and Negative Syndrome Scale) items; β=-0.10-0.32). Overall, DSH in forensic patients was more strongly associated with personality pathology and functioning, whereas in non-forensic patients it was linked to trauma, clinical severity and sociodemographic factors.
conclusionsDespite similar DSH prevalence, forensic and non-forensic SSD patients showed distinct patterns of associated factors, suggesting different mechanisms of risk. CLINICAL IMPLICATIONS: Suicide prevention in SSD should adopt tailored risk formulations, emphasising personality pathology and functioning in forensic settings and trauma-informed, integrated care in non-forensic services.
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