Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2005 Oct:187:306-13.
doi: 10.1192/bjp.187.4.306.

Cannabis use and misuse prevalence among people with psychosis

Bob Green  1 , Ross Young, David Kavanagh
Affiliations
Review

Cannabis use and misuse prevalence among people with psychosis

Bob Green et al. Br J Psychiatry. 2005 Oct.

Abstract

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.

PubMed Disclaimer