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    Evaluating the impact of community-based treatment options on methamphetamine use: Findings from the Methamphetamine Treatment Evaluation Study (MATES)

    Access Status
    Fulltext not available
    Authors
    McKetin, Rebecca
    Najman, J.
    Baker, A.
    Lubman, D.
    Dawe, S.
    Ali, R.
    Lee, N.
    Mattick, R.
    Mamun, A.
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    McKetin, R. and Najman, J. and Baker, A. and Lubman, D. and Dawe, S. and Ali, R. and Lee, N. et al. 2012. Evaluating the impact of community-based treatment options on methamphetamine use: Findings from the Methamphetamine Treatment Evaluation Study (MATES). Addiction. 107 (11): pp. 1998-2008.
    Source Title
    Addiction
    DOI
    10.1111/j.1360-0443.2012.03933.x
    ISSN
    0965-2140
    School
    National Drug Research Institute (NDRI)
    URI
    http://hdl.handle.net/20.500.11937/57050
    Collection
    • Curtin Research Publications
    Abstract

    Aims: To evaluate the impact of community-based drug treatment on methamphetamine use using inverse probability of treatment-weighted (IPTW) estimators to derive treatment effects. Design: A longitudinal prospective cohort study with follow-ups at 3 months, 1 year and 3 years. Treatment effects were derived by comparing groups at follow-up. IPTW estimators were used to adjust for pre-treatment differences between groups. Setting: Sydney and Brisbane, Australia. Participants: Participants were methamphetamine users entering community-based detoxification (n=112) or residential rehabilitation (n=248) services and a quasi-control group of methamphetamine users (n=101) recruited from the community. Measurements: Frequency of methamphetamine use between interviews (no use, less than weekly, 1-2 days per week, 3+ days per week), continuous abstinence from methamphetamine use, past month methamphetamine use and methamphetamine dependence. Findings: Detoxification did not reduce methamphetamine use at any follow-up relative to the quasi-control group. Relative to quasi-control and detoxification groups combined, residential rehabilitation produced large reductions in the frequency of methamphetamine use at 3 months [odds ratio (OR)=0.23, 95% confidence interval (CI) 0.15-0.36, P < 0.001), with a marked attenuation of this effect at 1 year (OR 0.62, 95% CI 0.40-0.97, P=0.038) and 3 years (OR=0.71, 95% CI 0.42-1.19, P=0.189). The greatest impact was for abstinence: for every 100 residential rehabilitation clients there was a gain of 33 being continuously abstinent at 3 months, with this falling to 14 at 1 year and 6 at 3 years. Conclusions: Community-based residential rehabilitation may produce a time-limited decrease in methamphetamine use, while detoxification alone does not appear to do so.

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