Violence in treatment resistant psychotic inpatients

This study sought to: a) ascertain the effect on rates of violence by varyi ng its operational definition and b) compare characteristics of violent and nonviolent patients. Aggressive behavior was recorded daily for every pati ent (N = 78) during a 2-year period. Standardized rating scales were used t o rate psychopathology and functioning. Almost two thirds of patients were aggressive to others, and 26% violently assaulted another person. Official incident reports Underestimated rates of violence to others, self-harm, and property damage. Multivariate predictive models that greatly improved accu racy over base rates showed that violent patients tended to be female, schi zophrenic (nonparanoid type), and abusive of alcohol before admission. Viol ence is more common in treatment resistant psychotic inpatients than sugges ted by incident reports. Standardized definitions of violence are urged in order to accurately study its prevalence and correlates. Models combining b oth historical/demographic and clinical data may enhance prediction of viol ence.