Risk factors for violence among female forensic inpatients with schizophrenia

Viviane Wolf; Juliane Mayer; Ivonne Steiner; Irina Franke; Verena Klein; Judith Streb; Manuela Dudeck

doi:10.3389/fpsyt.2023.1203824

Risk factors for violence among female forensic inpatients with schizophrenia

Front Psychiatry. 2023 Jun 30:14:1203824. doi: 10.3389/fpsyt.2023.1203824. eCollection 2023.

Authors

Viviane Wolf^{1

2}, Juliane Mayer², Ivonne Steiner², Irina Franke^{3

4}, Verena Klein², Judith Streb⁴, Manuela Dudeck⁴

Affiliations

¹ Department of Psychiatry and Psychotherapy, Medical Faculty, LVR-Clinic Duesseldorf, Heinrich Heine University Duesseldorf, Duesseldorf, Germany.
² Department of Forensic Psychiatry and Psychotherapy, kbo-Isar-Amper-Clinic Taufkirchen (Vils), Taufkirchen (Vils), Germany.
³ Psychiatric Services of Grisons, Chur, Switzerland.
⁴ Department of Forensic Psychiatry and Psychotherapy, Ulm University, Guenzburg, Germany.

Abstract

Introduction: Schizophrenia is associated with a heightened risk of violent behavior. However, conclusions on the nature of this relationship remain inconclusive. Equally, the empirical evidence on female patients with schizophrenia spectrum disorders (SSD) is strongly underrepresented.

Methods: For this purpose, the first aim of the present retrospective follow-up study was to determine the risk factors of violence in a sample of 99 female SSD patients discharged from forensic psychiatric treatment between 2001 and 2017, using three different measures of violence at varying time points (i.e., violent index offense, inpatient violence, and violent recidivism). Potential risk factors were retrieved from the relevant literature on SSD as well as two violence risk assessment instruments (i.e., HCR-20 V3, FAM). Further, we aimed to assess the predictive validity of the HCR-20 V3 in terms of violent recidivism and evaluate the incremental validity of the FAM as a supplementary gender-responsive assessment.

Results: The given results indicate strong heterogeneity between the assessed violence groups in terms of risk factors. Particularly, violence during the index offense was related to psychotic symptoms while inpatient violence was associated with affective and behavioral instability as well as violent ideation/intent, psychotic symptoms, and non-responsiveness to treatment. Lastly, violent recidivism was related to non-compliance, cognitive instability, lack of insight, childhood antisocial behavior, and poverty. Further, the application of the HCR-20 V3 resulted in moderate predictive accuracy (AUC = 0.695), while the supplementary assessment of the FAM did not add any incremental validity.

Discussion: This article provides important insights into the risk factors of violence among female SSD patients while highlighting the importance of differentiating between various forms of violence. Equally, it substitutes the existing evidence on violence risk assessment in female offenders with SSD.

Keywords: female offenders; psychosis; schizophrenia; violence; violence risk assessment.