Community outcomes of mentally disordered homicide offenders in Victoria

Objective: The aim of the present study was to describe characteristics and post-release outcomes of Victorian homicide offenders under the Crimes (Mental Impairment and Unfitness to be Tried) Act 1997 (and/or its forerunner legislation) released from forensic inpatient psychiatric care since the development of specialist forensic services. Method: A legal database identified subjects meeting inclusion criteria: hospitalized in forensic psychiatric care due to finding of mental impairment or unfitness to stand trial for homicide in Victoria; released into the community; and released between 1 January 1991 and 30 April 2002. Using clinical records, demographics, index offence, progress in hospital, diagnosis, psychosocial and criminological data were obtained. Outcomes (offending or readmission into secure care) were obtained from the clinical records. Results: Of the 25 subjects, 19 (76%) were male. Primary diagnoses on admission to forensic hospital care were schizophrenia, n = 16 (64%); other psychotic disorder, n = 5 (20%); depression, n = 3 (12%); and personality disorder, n = 1 (4%). Mean time in custodial supervision was 11 years and 2 months, less for those whose offence occurred after the development of forensic rehabilitation services. In the first 3 years after release, there was a single episode of criminal recidivism, representing a recidivism rate of 1 in 25 (4%) over 3 years. Twelve subjects (48%) were readmitted at some point in the 3 year follow up. Conclusion: There was a very low rate of recidivism after discharge, but readmissions to hospital were common. Lengths of custodial care were reduced after the introduction of forensic rehabilitation facilities. Recidivism is low when there are well-designed and implemented forensic community treatment programmes, consistent with other data suggesting a reciprocal relationship between safe community care and a low threshold for readmission to hospital, lessening re-offending at times of crisis. Further research should be directed at timing of release decisions, based on reducing identified risk factors to acceptable levels.