A developmental-based motivational intervention to reduce alcohol and marijuana use among non-treatment-seeking young adults: a randomized controlled trial

Autor: Kristin Grimone, Celeste M. Caviness, Bradley J. Anderson, Daniel Audet, Michael D. Stein, Debra S. Herman, Ethan Moitra, Emily F. Morse
Rok vydání: 2017
Předmět:
Zdroj: Addiction. 113:440-453
ISSN: 0965-2140
DOI: 10.1111/add.14026
Popis: Aims To test the hypothesis that among non-treatment-seeking emerging adults (EA) who both use marijuana and have alcohol binges, a brief, longitudinally delivered, developmentally based motivational intervention would show greater reductions in the use of these two substances compared with a health education control condition. Design Parallel, two-group, randomized controlled trial with follow-up interventions conducted at 1, 3, 6 and 9 months and final assessments at 12 and 15 months. Setting Hospital-based research unit in the United States. Participants Community-based 18–25-year-olds who reported at least monthly binge drinking and at least weekly marijuana use. Intervention Motivational intervention (EA-MI) focused primarily on themes of emerging adulthood (identity exploration, instability, self-focus, feeling in-between, a sense of possibilities) and the subjects' relationship to substance use (n = 110) compared with an attention-matched health education control condition (n = 116). Measurements The primary outcomes were days of binge alcohol, marijuana and dual use day as measured using the timeline follow-back method analysing the treatment by time interaction to determine relative differences in the rate of change between intervention arms. Findings At baseline, the mean rate (days/30) of binge drinking was 5.23 (± 4.31) of marijuana use was 19.4 (± 10.0) and of dual (same day) use was 4.11 (± 4.13). Relative to baseline, there were reductions in the rate of binge alcohol use, marijuana use and days of combined binge alcohol and marijuana use (P
Databáze: OpenAIRE
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