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Changing characteristics of forensic psychiatric patients in Ontario: a population-based study from 1987 to 2012

  • Stephanie R. PenneyEmail author
  • Michael C. Seto
  • Anne G. Crocker
  • Tonia L. Nicholls
  • Teresa Grimbos
  • Padraig L. Darby
  • Alexander I. F. Simpson
Original Paper

Abstract

Purpose

To quantify the demand for forensic psychiatric services in Ontario over the past 25 years and investigate whether the sociodemographic, clinical and offense-based characteristics of forensic patients have changed over time.

Methods

We investigated all forensic admissions from 1987 to 2012 resulting in a disposition of Not Criminally Responsible on account of Mental Disorder (N = 2533). We present annual proportions of patients with specified sociodemographic, clinical and offense characteristics, and investigate whether the duration of forensic system tenure varies as a function of admission year, psychiatric diagnosis, or index offense.

Results

There has been a steady increase in forensic admissions over this time period, particularly individuals with comorbid substance use disorders and individuals of non-Caucasian ethno-racial background. The proportion of persons committing severe violence has remained low and has decreased over time. Having a comorbid personality, neurological, or substance use disorder significantly increased forensic system tenure, as did committing a violent offense. Individuals who came into the system in earlier years had slower rates of discharge compared to more recent admissions.

Conclusions

Defining the trends characterizing the growth of the forensic population has important policy implications, as forensic services are costly and involve a significant loss of liberty. The current results indicate that young, substance abusing individuals of diverse ethno-racial backgrounds and who commit relatively low-level violence comprise an increasing proportion of Ontario’s forensic population, and suggest that treatment must be optimized to best serve the needs of these individuals.

Keywords

Psychiatric services Mentally ill persons Forensic mental health Time trends Crime 

Notes

Acknowledgements

We would like to thank the Honorable Justice Richard Schneider, Angie Baggetta, Sheila McDermott, Chloe Vice and other staff at the Ontario Review Board office for their generous support of this project. In addition, we wish to thank the research analysts who collected the data: Stephanie Fernane, Bronwyn Mackenzie, Crystal Li and Daphne Vrantsidis. This study was funded by the Ontario Mental Health Foundation and Ministry of Health and Long Term Care. Dr. Nicholls would like to acknowledge the consecutive salary support of the Canadian Institutes of Health Research New Investigator Award and Michael Smith Foundation for Health Research Scholar Award.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Complex Care and Recovery Program, Forensic DivisionCentre for Addiction and Mental HealthTorontoCanada
  2. 2.Department of PsychiatryUniversity of TorontoTorontoCanada
  3. 3.Forensic Research UnitRoyal Ottawa Institute of Mental Health ResearchOttawaCanada
  4. 4.Forensic Rehabilitation Research, Royal Ottawa Health Care GroupOttawaCanada
  5. 5.Department of Psychiatry and Addictions, Université de MontréalMontrealCanada
  6. 6.Research and Academics, Institut Philippe-Pinel de MontréalMontrealCanada
  7. 7.Forensic Psychiatric Services Commission and BC Mental Health and Substance Use Services, Provincial Health Services AuthorityVancouverCanada
  8. 8.Department of PsychiatryUniversity of British ColumbiaVancouverCanada
  9. 9.Child, Youth and Family ProgramCentre for Addiction and Mental HealthTorontoCanada

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