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01.10.2012 | Meeting abstract | Sonderheft 1/2012 Open Access

Addiction Science & Clinical Practice 1/2012

Fidelity to motivational interviewing and subsequent cannabis cessation among adolescents three months after brief intervention

Addiction Science & Clinical Practice > Sonderheft 1/2012
Jim McCambridge, Maria Day, Bonnita Thomas, John Strang
This study tested whether differences in cannabis cessation three months after a single session of motivational interviewing (MI) may be attributable to fidelity to MI. All audiorecordings with necessary three-month follow-up data (N = 75) delivered by four individual practitioners within a randomized controlled trial (RCT) were used. Participants were weekly or more frequent cannabis users aged 16–19 years old in further-education colleges. All tapes were coded with the Motivational Interviewing Treatment Integrity (MITI) scale, Version 2, by two coders. Satisfactory inter-rater reliability was achieved. Differences between and within practitioners in fidelity to MI were consistently detected. After controlling for practitioner effects, MI spirit and the proportion of complex reflections were independently predictive of cessation outcome. No other aspects of fidelity were associated with outcome. These two particular aspects of enhanced fidelity to MI were predictive of subsequent cannabis cessation three months after a brief intervention among young cannabis users.
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://​creativecommons.​org/​licenses/​by/​2.​0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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