Social support and contingency management among alcohol-impaired drivers: A secondary analysis of a randomized clinical trial.

Authors

Tae-Joon Moon, Yuanyuan Liang, Richard J Lamb, John D Roache, Nathalie Hill-Kapturczak, Donald M Dougherty

Published in

Journal of substance use and addiction treatment. Pages 210137. Oct 15, 2026. Epub Oct 15, 2026.

Abstract

This study examines whether perceived social support moderated contingency management (CM) outcomes among alcohol-impaired drivers.
One hundred forty-five non-mandated adults arrested for driving while intoxicated in Bexar County, Texas, were randomized to 8-week CM (n = 74) or yoked Control (n = 71). Participants (mean age = 37.16 years, SD = 10.61) were predominantly male (77.2%) and Hispanic or Latino (71.0%). Weekly contingency compliance required clinic attendance and transdermal alcohol concentrations below 0.02 g/dL throughout the preceding week. Group-based multi-trajectory modeling jointly modeled three Multidimensional Scale of Perceived Social Support subscales assessed at baseline and Weeks 4 and 8. Mixed-effects logistic regression tested treatment-by-trajectory-by-week interactions, adjusting for sex, age, and baseline drinking.
Three groups emerged: low-level (25.5%), moderate-stable (61.4%), and high-stable (13.1%). The CM × high-stable support × week interaction yielded OR = 1.53 (p = .09). Observed compliance was higher in CM than Control at Weeks 2-5 and 8 in the low-level group and all eight weeks in the moderate-stable group. Low-level compliance did not change significantly in either condition. Moderate-stable compliance declined in both conditions, significantly only in Control (p = .04), with largely parallel trends. High-stable compliance increased in CM (p = .003), more than in Control (p = .03); Week 8 estimated probabilities in the high-stable group were 0.87 versus 0.33 (p = .01).
Perceived social support may shape responses to CM among alcohol-impaired drivers. Findings highlight the potential value of CM approaches that align financial incentives with everyday social reinforcement.

PMID:
42880716
Bibliographic data and abstract were imported from PubMed on 16 Oct 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.