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Drug Alcohol Depend. 2000 Jun 1;59(3):309-18.

One year follow-up of cannabis dependence among long-term users in Sydney, Australia.

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  • 1National Drug and Alcohol Research Centre, University of New South Wales, Sydney, Australia. w.swift@unsw.edu.au

Abstract

Eighty one percent of a sample of long-term cannabis users was followed up at 1 year (162/200). Half (51%) were daily smokers, while 20% had substantially decreased or ceased use. More than half received a dependence diagnosis on each of three measures in the last year, with 44% dependent on all three. Remission was much more common than incidence of dependence. Nevertheless, use and dependence patterns were strongly related over time. Longitudinal analyses revealed that quantity of use and severity of dependence at baseline were the primary predictors of those same variables at follow-up. These data suggest that cannabis use and dependence are fairly stable among long-term users.

PMID:
10812291
[PubMed - indexed for MEDLINE]
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