Using contingency management procedures to reduce at-risk drinking in heavy drinkers

Area of Science:

• Behavioral Science
• Addiction Medicine
• Public Health

Background:

• Traditional alcohol use disorder treatments focus on abstinence.
• Harm reduction strategies are gaining popularity for altering drinking behavior and reducing alcohol-related consequences.
• This study investigated contingency management for heavy drinkers.

Purpose of the Study:

• To determine the effectiveness of a contingency management procedure in reducing alcohol consumption among heavy drinkers.
• To assess if reductions in drinking persist after incentives are removed.

Main Methods:

• Eighty-two nontreatment-seeking heavy drinkers participated.
• A 3-phase study included Observation (4 weeks), Contingency Management (12 weeks) with financial incentives for low alcohol consumption (<0.03 g/dl) measured by transdermal monitors, and Follow-up (12 weeks).
• Alcohol consumption was primarily assessed via self-report, with transdermal monitors used for verification.

Main Results:

• 42.3% of participants met contingency criteria, earning an average of $222 during the intervention phase.
• Self-reported drinking days decreased significantly from 59.9% to 40.0% during Contingency Management and 32.0% during Follow-up.
• Heavy drinking days decreased from 42.4% to 19.7%, with a corresponding increase in non-drinking days (40.1% to 60.0%).

Conclusions:

• Contingency management significantly reduced self-reported heavy drinking episodes in nontreatment-seeking heavy drinkers.
• The observed reductions in harmful drinking patterns persisted after the incentive program concluded.
• Contingency management shows potential as a therapeutic intervention for reducing problematic alcohol consumption.