Mental disorder in people convicted of homicide: long-term national trends in rates and court outcome

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Abstract

Background
Homicide rates have fallen markedly in the UK over the past decade. There has been little research on whether homicides by people with mental disorder have contributed to this downward trend. Furthermore, there is limited information on trends in court outcomes for people with mental disorder who commit homicide.
Aims
To examine trends in general population homicide and homicide by people with mental disorder, and to explore court outcome.
Method
We conducted a national, consecutive case series of homicide in England and Wales (1997–2015). Data were received from the Home Office Statistics Unit of Home Office Science. Clinical information was obtained from psychiatric reports and mental health services.
Results
There has been a fall in the homicide rate in England and Wales since 2008. Despite this, the relative contribution of mental disorder as a proportion of all homicide has increased. Our findings also showed the inappropriate management of people with serious mental illness convicted of homicide. Of those who committed homicide and were diagnosed with schizophrenia, a third were imprisoned, and there was a marked fall in hospital order referrals. We found this to be linked to substance misuse comorbidity.
Conclusions
The proportional increase in homicide by people with schizophrenia suggests more complex factors may be driving rates, such as substance misuse. Addressing substance misuse comorbidity and maintaining engagement with services may help prevent patient homicide. Despite their complex needs, people with serious mental illness continue to be imprisoned. Improvements in assessment and the timely transfer of prisoners to health services are required.
Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalBritish Journal of Psychiatry
Early online date6 Jul 2020
DOIs
Publication statusPublished - 6 Jul 2020

Keywords

  • Homicide
  • mental illness
  • prison
  • schizophrenia
  • substance misuse

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