Category: Addictive Behaviors

Symposium

Interactive Text-Message Intervention With Adaptive Goal Support to Reduce Weekend Drinking Among Young Adults

Sunday, November 19
10:15 AM - 11:45 AM
Location: Aqua Salon E & F, Level 3, Aqua Level

Keywords: Addictive Behaviors | Alcohol | Technology / Mobile Health
Presentation Type: Symposium

This study aimed to evaluate acceptability and short-term efficacy of a text message intervention (TRAC2). TRAC2 focused on promoting goal-directed behavior and incorporated drinking-limit goal-commitment queries tailored to past 2-week alcohol consumption, intra-weekend goal reminders, self-efficacy support tailored to goal confidence, and drinking limit goal feedback.  We enrolled 50 non-treatment seeking young adults who screened positive for heavy drinking in an urban emergency department. Subjects who completed at least 50% of alcohol-related ecological momentary assessments (EMA) each Thursday and Sunday during a 2-week run-in were invited to enroll in TRAC2. The intervention provided tailored feedback based on EMA responses. Following each 4-week intervention block, subjects were offered continued enrollment in TRAC2.  All subjects were asked to complete a 3-month follow-up survey. We examined patterns of enrollment and EMA compliance to determine acceptability, and change in alcohol outcomes over time to evaluate efficacy. High rates of voluntary enrollment and re-enrollment in TRAC2 support the intervention’s acceptability. Response rates to EMA queries were, on average, 82.3% for the first 4-week intervention block, 75.3% for the second 4-week block, and 72.8% for the third 4-week block. The highest response rates (87%) were to the Thursday “weekend drinking plan” queries, and the lowest response rates (58%) were to the Friday “goal confidence” queries. On week 1, 78.8% of subjects reported a plan to drink, which decreased to 44.9% by week 4. Among subjects who reported a plan to drink over a weekend, on average, 94.4% reported willing to commit to the proposed drinking limit goal. The percentage of subjects being prompted to commit to a drinking limit goal above the HDE threshold was 51.7% on week 1 and decreased to 0% by week 4. On week 1, the maximum drinks consumed over the weekend decreased from a median 3 on week 1 to 0.5 by week 4. The percentage of subjects reporting a HDE on any weekend occasion decreased from 34.0% on week 1 to 13.9% on week 4. The percentage of subjects who met their drinking limit goal was, on average, 89.0%. Preliminary evidence suggests that a text message intervention incorporating goal-directed behavioral support is useful to reduce alcohol consumption in young adults.  

Brian Suffoletto

University of Pittsburgh

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