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The British Journal of Psychiatry (2005) 187: 426-430
© 2005 The Royal College of Psychiatrists

Violent behaviour in schizophrenia

Retrospective study of four independent samples from Prague, 1949 to 2000

JAN VEVERA, MD

Psychiatric Clinic, 1st Faculty of Medicine, Charles University, Prague, Czech Republic, and School of Public Health, University of California, Berkeley, USA

ALAN HUBBARD, PhD and ARNOST VESELY, PhD

University of California, Berkeley, USA

HANA PAPEZOVÁ, MD

Psychiatric Clinic, 1st Faculty of Medicine, Charles University, Prague, Czech Republic

Correspondence: Dr Jan Vevera, Psychiatric Clinic, 1st Faculty of Medicine, Charles University, Ke Karlovu 11, Prague 120 00, Czech Republic. E-mail: janvevera{at}centrum.cz

Declaration of interest None. Funding detailed in Acknowledgements.

Background A number of studies have reported increased violence in patients with schizophrenia.

Aims To determine the prevalence of violence among those with schizophrenia in samples from 1949, 1969, 1989 and 2000 in Prague (Czech Republic) and to examine trends in this behaviour.

Method Records from 404 patients meeting DSM–IV criteria for schizophrenia were screened for violence (defined as 3 points on the Modified Overt Aggression Scale) from the first observed psychotic symptoms until the time of latest available information.

Results Logistic regression revealed a marginally significant increase in violence only in the 2000 cohort. Overall, violence was associated with schizophreniain 41.8% of men and 32.7% of women, with no association between substance misuse and violence.

Conclusions The violence rate found in our sample is expected to remain stable over time under stable conditions. Substance misuse is not the leading cause of violence among those with schizophrenia.


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