The association of clozapine treatment periods with incidence of exposure to assault and head injuries - a cohort study of electronic health records

People with schizophrenia experience violent victimization, and interventions to reduce this risk are needed. We tested the association of clozapine treatment with risk of exposure to assault and head injuries using electronic health records linked to a national clozapine treatment register and to national hospitalization data. The unadjusted incidence rate ratio (IRR) for clozapine treatment on exposure to assault and head injuries was 0.44 (95% confidence interval [CI]: 0.28-0.69). This effect remained statistically significant after covariate adjustment (0.46 (0.29-0.74); 0.40 (0.22-0.71) in men; 0.64 (0.29-1.43) in women. Clozapine treatment was thus associated with a substantially reduced risk of exposure to assault and head injuries.

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Publication Details

Journal
Frontiers in Psychiatry
Published
2026-01-21
DOI
https://doi.org/10.3389/fpsyt.2025.1704073
Primary Topic
Psychopathy, Forensic Psychiatry, Sexual Offending
Type
article
Field-Weighted Citation Impact
0.00

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article

The association of clozapine treatment periods with incidence of exposure to assault and head injuries - a cohort study of electronic health records

Amelia Jewell, Risha Govind, Vishal Bhavsar, James Hunter MacCabe et al.
Frontiers in Psychiatry
Psychopathy, Forensic Psychiatry, Sexual Offending
article

The association of clozapine treatment periods with incidence of exposure to assault and head injuries - a cohort study of electronic health records

Amelia Jewell, Risha Govind, Vishal Bhavsar, James Hunter MacCabe, Francesca Kingston, Robert Stewart
article en

Abstract

People with schizophrenia experience violent victimization, and interventions to reduce this risk are needed. We tested the association of clozapine treatment with risk of exposure to assault and head injuries using electronic health records linked to a national clozapine treatment register and to national hospitalization data. The unadjusted incidence rate ratio (IRR) for clozapine treatment on exposure to assault and head injuries was 0.44 (95% confidence interval [CI]: 0.28-0.69). This effect remained statistically significant after covariate adjustment (0.46 (0.29-0.74); 0.40 (0.22-0.71) in men; 0.64 (0.29-1.43) in women. Clozapine treatment was thus associated with a substantially reduced risk of exposure to assault and head injuries.

Frontiers in PsychiatryVol. 16
King's College London (GB), South London and Maudsley NHS Foundation Trust (GB)
South London and Maudsley NHS Foundation Trust, King's College Hospital NHS Foundation Trust, UK Research and Innovation, National Institute for Health and Care Research, Department of Health and Social Care, King's College London, NIHR Maudsley Biomedical Research Centre, Medical Research Council, National Institute for Health Research Applied Research Collaboration South London
Gender equality
Openalex Percentile: Top 84%
Psychopathy, Forensic Psychiatry, Sexual Offending
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