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Randomized Controlled Trial
. 2023 Jan 1:242:109706.
doi: 10.1016/j.drugalcdep.2022.109706. Epub 2022 Nov 19.

Reduced alcohol use increases drink-refusal self-efficacy: Evidence from a contingency management study for DWI arrestees

Erin E Wood  1 , Yuanyuan Liang  2 , Tae-Joon Moon  3 , Alexander M Wasserman  4 , R J Lamb  3 , John D Roache  3 , Nathalie Hill-Kapturczak  3 , Donald M Dougherty  5
Affiliations
Randomized Controlled Trial

Reduced alcohol use increases drink-refusal self-efficacy: Evidence from a contingency management study for DWI arrestees

Erin E Wood et al. Drug Alcohol Depend. .

Abstract

Background: Several therapies and interventions to reduce drinking first target drink-refusal self-efficacy (DRSE) to influence drinking behavior. While higher self-efficacy scores are correlated with better outcomes, it is unclear that increased self-efficacy is the causative step leading to improved outcomes. Instead, this correlation may result from reduced drinking that increased self-efficacy. The current study sought to understand how changes in drinking behavior can influence DRSE.

Methods: Data were from 211 driving while intoxicated (DWI) arrestees participating in an 8-week contingency management (CM) study to reduce drinking. Some of participants were mandated by the courts to wear transdermal alcohol monitoring devices (Mandated group) and some were not mandated (Non Mandated group). All wore a transdermal alcohol monitor during the 8-week study and were randomized to CM or a Control condition stratified by the mandate group. Participants completed weekly assessments of DRSE. Group-based trajectory-modeling identified three drinking behavior trajectory groups.

Results: While there were no differences in baseline DRSE between the three trajectory groups, participants in the low- and moderate-frequency drinking behavior groups significantly increased DRSE across the study.

Conclusion: The present study indicates that being able to maintain abstinence or reduce heavy drinking may increase DRSE.

Keywords: Alcohol; Behavioral intervention; Contingency management; Drink-refusal self-efficacy; SCRAM monitors; Transdermal alcohol concentration.

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Conflict of interest statement

Competing interest statement The authors do not have any competing interests to declare.

Figures

Figure 1.
Figure 1.
Study flow chart. NOTE: The Brief Situational Control Questionnaire was used to assess Drink-Refusal Self-Efficacy
Figure 2.
Figure 2.
Three distinct patterns of drinking behavior identified by group-based trajectory modelling (GBTM) of daily TAC heavy drinking data
Figure 3.
Figure 3.
Patterns of changes in participant-rated self-efficacy across the 8-week study period based on baseline levels of DRSE
Figure 4.
Figure 4.
Patterns of changes in participant-rated self-efficacy across the 8-week study period based on drinking behavior trajectory group NOTE: Results are based on the linear mixed-effects model described in Table 2
Figure 5.
Figure 5.
Patterns of changes in participant-rated self-efficacy across the 8-week study period based on study group NOTE: Results are based on the linear mixed-effects model described in Table 2
See this image and copyright information in PMC

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