Program Overview
Texting to Reduce Alcohol Consumption 2 (TRAC2) is an adaptive text message intervention that uses texts and ecological momentary assessments (EMAs) to reduce weekend alcohol consumption in at-risk nontreatment-seeking young adults.
Over a 12-week period, TRAC2 sent users a voluntary pre-weekend drinking limit goal EMA (a 2-week average of the maximum number of alcoholic drinks consumed at one time by the individual). Participants received intra-weekend goal reminders and completed a self-efficacy EMA (queried user confidence in goal success and sent tailored self-efficacy support based on user response). A final EMA queried maximum alcohol consumption at any one time over the past week (individualized feedback celebrated success, reframed failure, or offered information on amount consumed). Users received TRAC2 messages 4 days per week: Thursday (voluntary pre-weekend drinking limit goal EMA), Friday and Saturday (intra-weekend goal reminders and self-efficacy EMA), and Sunday (weekly maximum drinks consumed EMA). If the user had a 2-week maximum consumption average that exceeded 10 drinks, TRAC2 defaulted to a drinking limit goal of 10 drinks. If the user had a 2-week maximum consumption average that was ≤ 10 drinks but exceeded the binge drinking threshold (women: ≥4 drinks, men: ≥5 drinks), TRAC2 defaulted to a drinking limit goal of 1 drink less than the past 2-week maximum consumption average. Informed by behavioral theory, the adaptive drinking limit goal encouraged small sequential shifts toward a lower-risk drinking limit goal.
Delivery:
Mobile application (app)
Text message
Theoretical Approach(es):
Ecological Momentary Assessment (EMA)
Behavioral Theory
Target Substance(s):
Alcohol
Target Outcome(s):
Reduction in quantity of alcohol consumption
Ages:
Young Adults
Genders:
Male
Female
Races/Ethnicities:
Unspecified
Setting(s):
Unspecified
Geographic Location(s):
Unspecified
Country:
United States
Language:
English