Trends in Psychiatry and Psychotherapy
Trends in Psychiatry and Psychotherapy
Original Article

Schizophrenia and violence: study in a general psychiatric hospital with HCR-20 and MOAS

Esquizofrenia e violência: estudo em um hospital psiquiátrico clínico com o HCR-20 e a MOAS

Leonardo Fernandez Meyer; Lisieux E. de Borba Telles; Kátia Mecler; Ana Luiza Alfaya Galego Soares; Renata Santos Alves; Alexandre Martins Valença

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Abstract Objective: This preliminary study aimed to identify and compare characteristics related to violent behavior in inpatients with schizophrenia at a general psychiatric hospital using the Historical, Clinical, and Risk Management 20 (HCR-20), the Modified Overt Aggression Scale (MOAS), and sociodemographic data. Method: Violent and nonviolent participants were selected based on psychiatric admission reports. Participants with reports of aggressive behavior and HCR-20 total score ≥ 21 upon admission were assigned to the violent patient group. Participants without aggressive behavior and with HCR-20 total score < 21 upon admission were assigned to the nonviolent patient group. The MOAS was applied to characterize the degree of severity of the violent behavior. Results: HCR-20 and its subscales were effective in differentiating between the violent and nonviolent participant groups. Twelve of the 20 HCR-20 items were useful for distinguishing between the groups, although total HCR-20 scores were more reliable when applied to the nonviolent patient group. The MOAS did not show high degrees of severity for the types of aggression observed in the participants. Conclusion: HCR-20 was useful and reliable for distinguishing between violent and nonviolent patients with schizophrenia in this clinical psychiatric setting. Item analysis identified the most relevant characteristics in each group. The use of the HCR-20 in clinical psychiatric settings should be encouraged.


Aggressiveness, psychosis, schizophrenia, HCR-20, risk assessment, MOAS


Resumo Objetivo: Este estudo preliminar tem por objetivo identificar e comparar características relacionadas ao comportamento violento em pacientes com esquizofrenia internados em um hospital psiquiátrico utilizando o Historical, Clinical, and Risk Management 20 (HCR-20), a Modified Overt Aggression Scale (MOAS), e dados sociodemográficos. Método: Foram selecionados participantes com e sem histórico de comportamento violento, referidos nos relatórios de internação hospitalar. Participantes violentos e com escore total do HCR-20 ≥ 21 na internação foram selecionados para o grupo violento. Participantes não violentos com escore total do HCR-20 < 21 na internação foram selecionados para o grupo não violento. A MOAS foi aplicada para caracterizar o grau de severidade do comportamento violento. Resultados: O HCR-20 e suas subescalas foram eficazes na diferenciação entre os participantes dos grupos. Doze dos 20 itens do HCR-20 foram úteis na diferenciação entre os grupos, apesar do escore total do HCR-20 ter sido mais confiável quando aplicado ao grupo não violento. A MOAS não apresentou graus de severidade elevados para os tipos de agressividade observados nos participantes. Conclusão: O HCR-20 foi útil e confiável na distinção entre pacientes esquizofrênicos violentos e não violentos em ambiente psiquiátrico clínico, já que a análise dos itens identificou as características mais relevantes em cada grupo. O uso do HCR-20 em ambientes psiquiátricos clínicos deveria ser encorajado.


Agressividade, psicose, esquizofrenia, HCR-20, avaliação de risco, MOAS


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