Hon Alison Xamon asks the Minister for Mental Health about the source of the statistic that 6% of adults attending Perth Magistrates' Courts have a serious mental illness. The Minister responds that the estimate is derived from a review of Australian and international literature.

AnsweredQoN 5728Legislative Council
Asked
13 June 2012
Portfolio
Mental Health

QuestionView source ↗

I refer to the first paragraph under 'Mental Illness in the Criminal Justice System' on page 869 of the 2012-13 State Budget papers, and I ask if the Minister would please advise of the source of the statistic that six per cent of adults attending the Perth Magistrates' Courts are estimated to have a serious mental illness?

AnswerView source ↗

Answered
14 August 2012
Responded by
Minister for Mental Health
Response time
62 days
The estimate of 6 per cent was derived from a review of the Australian and international literature, and reflects a conservative approach.
A range of Australian and international studies have attempted to estimate the rate of serious mental illness in the criminal justice system, which includes the court-attending population. These studies use differing methodologies, subject selection and use of instruments, and also have different target populations.
Examples of this work include but are not confined to:
Ogloff et al (2007) '
The identification of mental disorders in the criminal justice system: report to the Criminology Research Council'
Australian Institute of Criminology
An extensive review of existing Australian epidemiological data by Mullen et al (2003)
National forensic mental health scoping study
, Canberra: Department of Health and Ageing,
The review of the literature contained in: the 2008 and 2009 reports of the Law Reform Commission:
Law Reform Commission of Western Australia (2008)
Court Intervention Programs: Consultation Paper
, Government of Western Australia
Law Reform Commission of Western Australia (2009)
Court Intervention Programs: Final Report
, Government of Western Australia
This is reinforced by the considerable work of Professor Shaw from the University of Manchester over the past decade, including Shaw J et al (1999)
Prevalence and detection of serious psychiatric disorder in defendants attending court
, The Lancet, Volume 353, Issue 9158.
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