Cannabis use and misuse prevalence among people with psychosis
Background: Increasing attention has been given by researchers to cannabis use in individuals with psychosis. As psychoses are relatively low-prevalence disorders, research has been mostly been restricted to small-scale studies of treatment samples.The reported prevalence estimates obtained from these studies vary widely.
Aims: To provide prevalence estimates based on larger samples and to examine sources of variability in prevalence estimates across studies.
Method: Data from 53 studies of treatment samples and 5 epidemiological studies were analysed.
Results: Based on treatment sample data, prevalence estimates were calculated for current use (23.0%), current misuse (11.3%),12-month use (29.2%),12-month misuse (18.8%), lifetime use (42.1%) and lifetime misuse (22.5%). Epidemiological studies consistently reported higher cannabis use and misuse prevalence in people with psychosis.
Conclusions: The factor most consistently associated with increased odds of cannabis prevalence was specificity of diagnosis. Factors such as consumption patterns and study design merit further consideration.
Impact and interest:
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|Item Type:||Journal Article|
|Keywords:||Prevalence, Cannabis use, Cannabis misuse, Psychosis|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > PUBLIC HEALTH AND HEALTH SERVICES (111700) > Mental Health (111714)|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Psychology & Counselling
|Copyright Owner:||Copyright 2005 Royal College of Psychiatrists|
|Copyright Statement:||The definitive publisher-authenticated version is available online at http://bjp.rcpsych.org|
|Deposited On:||18 Nov 2009 00:48|
|Last Modified:||29 Feb 2012 13:17|
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