A Randomized Controlled Trial of a Web-Based, Personalized Normative Feedback Alcohol Intervention for Young-Adult Veterans
Published in:Journal of Consulting and Clinical Psychology, Vol 85(5), May 2017, 459-470.doi: 10.1037/ccp0000187
Posted on RAND.org on May 19, 2017
- Can a very short web-based intervention reduce drinking among young veterans?
Young-adult American veterans are at risk for problematic alcohol use. However, they are unlikely to seek care and may drop out from lengthy, multicomponent treatments when they do get care. This randomized controlled trial tested a very brief alcohol intervention delivered over the Internet to reach the population of young-adult veterans to help reduce their drinking.
Veterans (N = 784) were recruited from Facebook and randomized to either a control condition or a personalized normative feedback (PNF) intervention seeking to correct drinking perceptions of gender-specific veteran peers.
At immediate postintervention, PNF participants reported greater reductions in their perceptions of peer drinking and intentions to drink over the next month, compared with control participants. At 1-month follow-up, PNF participants reduced their drinking behavior and related consequences to a significantly greater extent than controls. Specifically, PNF participants drank 3.4 fewer drinks per week, consumed 0.4 fewer drinks per occasion, binge drank on 1.0 fewer days, and experienced about 1.0 fewer consequences than control participants in the month after the intervention. Intervention effects for drinks per occasion were most pronounced among more problematic drinkers. Changes in perceived norms from baseline to 1-month follow-up mediated intervention efficacy.
Though effects were assessed after only 1 month, findings have potential to inform broader, population-level programs designed for young veterans to prevent escalation of drinking and development of long-term alcohol problems. Given the simplicity of the PNF approach and ease of administration, this intervention has the potential for a substantial impact on public health.
- Intervention participants experienced reductions in the amount of drinking per week, average number of drinks per occasion, number of binge drinking days, and number of alcohol-related consequences, compared with control participants not receiving the intervention.
- The intervention's personalized normative feedback immediately affected participants' perceptions of norms of drinking among their peers, and its effects on drinking and alcohol-related consequences persisted through the 1-month follow-up.
- The effects of the intervention were larger for veterans whose drinking was more problematic at baseline.
- The intervention did not appear to affect subpopulations of study participants differentially, such as those endorsing depression or posttraumatic stress disorder symptoms.
- Future research is needed to evaluate the efficacy of this intervention over a longer period of time, as it appears to be a convenient and effective way to reach young veteran problem drinkers who may not be actively seeking care.