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Objective: This paper examines clinical and forensic outcomes for defendants found not guilty by reason of insanity in New Zealand, and explores the implications for policy development and clinical rehabilitation in this population. Method: All insanity acquittees disposed of by the courts as special patients after 1976 and released before 2004 are described. Their duration of inpatient care, rates of reconviction and rehospitalization following release are examined. The high resolution rate for violent crime reported to police suggests that reconviction rates are a reasonable proxy for violent reoffending. Factors predicting duration of inpatient care and reoffending are analysed. Results: Severity of Index Offence was the only variable predicting duration of inpatient care of the 135 special patients. Offenders of more serious offences were securely detained for longer periods – averaging 6 years in the case of those charged with murder. Most patients were readmitted over the decade following discharge. Only 6% had violently reoffended 2 years after release into the community. Prior offending, age at release, ethnicity and gender predicted reoffending, but not diagnosis or duration of inpatient admission. Conclusions: Following discharge into the community, insanity acquittees are reconvicted of violent crimes at a very low rate, although readmission to hospital is common. It may be that insanity acquittees are initially detained in hospital longer than is clinically indicated, and that safe forensic community treatment can occur at an earlier stage of recovery without compromising public safety. [ABSTRACT FROM AUTHOR]

Objective: The paper describes the methodologies and results obtained on a large cohort of prison inmates in New Zealand who were screened for psychiatric disorder. Method: All women and remanded male inmates in New Zealand prisons, and a randomly selected cohort of 18% of sentenced male inmates were interviewed. Interviewers used the Composite International Diagnostic Interview – Automated to establish DSM-IV diagnoses, and the Personality Disorders Questionnaire to identify personality disorder. All prisons in New Zealand were visited. Results: The results indicate markedly elevated prevalence rates for major mental disorder in the prison population when compared with community samples. This is especially the case for substance misuse, psychotic disorders, major depression, bipolar disorder, obsessive– compulsive disorder and posttraumatic stress disorder. Of particular concern is not only the increased prevalence rates for schizophrenia and related disorders but also the high level of comorbidity with substance misuse disorders demonstrated by this group. While 80.8% of inmates diagnosed with bipolar disorder were receiving psychiatric treatment in the prison, only 46.4% of depressed inmates and 37% of those suffering from psychosis were receiving treatment. Maori inmates were grossly overrepresented in the remand, female and male sentenced inmate population compared with the general population. Conclusions: A significant increase in provision of mental health services is required to cope with the high number of mentally ill inmates. The level of need demonstrated by this study requires a level of service provision that is quite beyond the capacity of current forensic psychiatry services, Department of Corrections Psychological Services or the prison nursing and medical officers. The elevated rates of common mental disorders argues for the use of improved psychiatric screening instruments, improved assessment and treatment capacities in the prison and an increased number of forensic psychiatric inpatient facilities to care for those psychotic inmates who are too unwell to be treated in the prison. [ABSTRACT FROM AUTHOR]