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Correlates of driving under the influence of cannabis.

Jones CG, Swift W, Donnelly NJ, Weatherburn DJ

New South Wales Bureau of Crime Statistics and Research, GPO Box 6, Sydney, NSW 2000, Australia. craig_jones@agd.nsw.gov.au

BACKGROUND: Identifying cannabis users who are most at risk of driving under the influence of cannabis (DUIC) has important implications for drug treatment and prevention efforts. This paper examined correlates of DUIC among a purposive sample of recent cannabis users. METHODS: Interviews were carried out among a cross-sectional sample of 320 Australian cannabis users. Past-year prevalence of DUIC (without using alcohol or other drugs) was regressed against a range of potential predictor variables. RESULTS: Use of multiple drugs, believing that DUIC does not increase accident risk and cannabis dependence all predicted likelihood of DUIC. There was an interaction between age of first cannabis use and gender, whereby earlier onset cannabis use predicted DUIC but only among women. CONCLUSIONS: The correlates of drug driving reflected cannabis users' beliefs about the dangers of cannabis use as well as their patterns of drug consumption. The emergence of cannabis dependence and age of onset as predictors of DUIC suggests a clearly defined role for treatment and prevention efforts in reducing the potential harms associated with DUIC.

Published 19 March 2007 in Drug Alcohol Depend, 88(1): 83-6.
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