Contingency management (CM) is a type of treatment used in the substance abuse field. Patients' behaviors are rewarded for adherence to a treatment plan. As an approach to treatment, contingency management emerged from the behavior therapy traditions in mental health. By most evaluations, contingency management procedures produce one of the largest effect sizes out of all mental health and educational interventions. The purpose of this study is to perform a randomized, controlled trial to evaluate the ability of a culturally-tailored contingency management (CM) intervention to increase alcohol and drug abstinence among American Indian (AI) tribal members from two rural reservations in the Northwest.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
120
Escalating reinforcement for alcohol abstinence. Alcohol-negative CM Participants draw chips out of a bowl containing 500 chips. Fifty percent of the chips will say "good job!" or a similar encouraging phrase, 41.8% of the chips will result in a small prize, 8% will result in a large prize, and 0.2% will result in a jumbo prize.
Escalating reinforcement for drug abstinence. Drug-negative participants will be invited to draw chips out of a bowl containing 500 chips. Fifty percent of the chips will say "good job!" or a similar encouraging phrase, 41.8% of the chips will result in a small prize, 8% will result in a large prize, and 0.2% will result in a jumbo prize.
Escalating reinforcement for drug and alcohol abstinence. Drug- and alcohol-negative participants will be invited to draw chips out of a bowl containing 500 chips. Fifty percent of the chips will say "good job!" or a similar encouraging phrase, 41.8% of the chips will result in a small prize, 8% will result in a large prize, and 0.2% will result in a jumbo prize.
Compensation for Non-Contingent control group participants is dependent only on providing urine samples, regardless of whether the urine tests are negative for alcohol and/or drugs.
Washington State University
Spokane, Washington, United States
Biochemically verified alcohol and/or drug abstinence
At every study visit, urine samples will be collected and analyzed for ethyl glucuronide and drugs. This helps assess Contingency Management as a treatment for alcohol and/or drug dependence.
Time frame: 24 weeks
Self- reported data on alcohol and drug use
Measures used for self-reported data on alcohol and drug use: 1. The Alcohol and Drug Timeline Follow Back (TLFB) 2. The Current Opioid Misuse Measure (COMM) 3. The Addiction Severity Index, Native American Version (ASI-NAV)
Time frame: 24 weeks
Other substance use
Amphetamine, methamphetamine, cocaine, and marijuana, will be measured by the same procedures described for urine tests of alcohol and drug metabolites.
Time frame: 24 weeks
Self- reported data on health behaviors
We will also collect secondary outcome data on health behaviors that frequently correlate with alcohol and drug misuse with the following measures: 1. The Timeline Follow Back will be used to assess daily number of cigarettes smoked. 2. Brief HIV Risk Behavior Scale 3. Veteran's Rand- 12 4. Self-Report Services Utilization Assessment
Time frame: 24 weeks
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