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Engagement With a Web-Based Intervention to Reduce Harmful Drinking: Secondary Analysis of a Randomized Controlled Trial
- Source :
- Journal of Medical Internet Research, Journal of Medical Internet Research, Vol 22, Iss 11, p e18826 (2020)
- Publication Year :
- 2020
-
Abstract
- Background Engagement with digital behavior change interventions (DBCIs) is considered a prerequisite for intervention efficacy. However, in many trials on DBCIs, participants use the intervention either only little or not at all. Objective To analyze engagement with a web-based intervention to reduce harmful drinking, we explored (1) whether engagement with a web-based alcohol intervention is related to drinking outcomes, (2) which user characteristics are associated with measures of engagement, and (3) whether reported outcomes are associated with data captured by voluntary intervention questionnaires. Methods We analyzed data of the intervention arm of a randomized controlled trial on a DBCI to reduce risky alcohol consumption. Data were collected at baseline (T0), after 90 days (T1), and at the end of the 180-day usage period (T2). Engagement with the intervention was measured via system usage data as well as self-reported usage. Drinking behavior was measured as average daily alcohol consumption as well as the number of binge drinking days. User characteristics included demographics, baseline drinking behavior, readiness to change, alcohol-related outcome expectancies, and alcohol abstinence self-efficacy. Following a bivariate approach, we performed two-tailed Welch’s t tests and Wilcoxon signed rank/Mann-Whitney U tests or calculated correlation coefficients. Results The data of 306 users were analyzed. Time spent engaging with the intervention as measured by system usage did not match self-reported usage. Higher self-reported usage was associated with higher reductions in average daily alcohol consumption (T1: ρ=0.39, P Conclusions Though self-reported usage could be consistently linked to better outcomes and multiple user characteristics, our findings add to the overall inconclusive evidence that can be found throughout the literature. Our findings indicate potential benefits of self-reports as measures of engagement and intervention questionnaires as a basis for tailoring of intervention content. Future studies should adopt a theory-driven approach to engagement research utilizing psychometrically sound self-report questionnaires and include short ecological momentary assessments within the DBCIs. Trial Registration German Clinical Trials Register DRKS00006104; https://tinyurl.com/y22oc5jo
- Subjects :
- Adult
Male
medicine.medical_specialty
020205 medical informatics
Adolescent
Psychometrics
Health Behavior
Binge drinking
Health Informatics
02 engineering and technology
readiness to change
outcome expectancy
lcsh:Computer applications to medicine. Medical informatics
law.invention
03 medical and health sciences
Young Adult
0302 clinical medicine
Randomized controlled trial
law
Intervention (counseling)
0202 electrical engineering, electronic engineering, information engineering
eHealth
medicine
Humans
030212 general & internal medicine
mHealth
Aged
Self-efficacy
Original Paper
business.industry
alcohol
lcsh:Public aspects of medicine
lcsh:RA1-1270
Middle Aged
usage
Clinical trial
Alcoholism
Physical therapy
lcsh:R858-859.7
Female
Self Report
business
self-efficacy
Internet-Based Intervention
Alcohol Abstinence
engagement
Subjects
Details
- ISSN :
- 14388871
- Volume :
- 22
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- Journal of medical Internet research
- Accession number :
- edsair.doi.dedup.....75e40f87912aaa0ccbdaff438228dd37