Contingency Management Treatment Duration

Study Overview
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Brief Summary
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310 alcohol abusing or dependent patients beginning intensive outpatient day treatment at community-based clinics will be randomly assigned to one of four conditions: (a) standard treatment as usual (ST) at the clinic without contingency management (CM); (b) standard treatment with contingency management for 12 weeks with a 0.5 probability of winning prizes for each negative sample submitted; (c) standard treatment with contingency management for 24 weeks with a 0.34 probability of winning prizes for each negative sample submitted; or (d) standard treatment with contingency management for 24 weeks with a 0.5 probability of winning prizes for each negative sample submitted. We expect that contingency management will decrease alcohol use to a greater extent than non-contingency management treatment, and that availability of contingency management for 24 weeks may result in longer term benefits than 12 week exposure to contingency management. This study will be the first to evaluate the effects of probability of winning prizes on response to contingency management.

Official Title
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Contingency Management Treatment Duration

Conditions
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Alcohol Abuse

Intervention / Treatment
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* Behavioral: Contingency Management


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: age > 18 years current DSM-IV diagnosis of alcohol abuse or dependence willing to sign informed consent and able to pass an informed consent quiz Exclusion Criteria: serious, uncontrolled psychiatric illness (e.g., acute schizophrenia, bipolar disorder, severe or psychotic major depression, or suicide risk) on the basis of history or medical examination current DSM-IV diagnosis of opioid dependence in recovery from pathological gambling

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: 1<br>Standard Treatment | |
| Experimental: 2<br>Standard Treatment with Contingency Management for 12 weeks with a 0.5 probability of winning prizes for each negative sample submitted | Behavioral: Contingency Management<br>* Prizes given for targeted behavior of abstinence<br>|
| Experimental: 3<br>Standard Treatment with Contingency Management for 24 weeks with a 0.34 probability of winning prizes for each negative sample submitted | Behavioral: Contingency Management<br>* Prizes given for targeted behavior of abstinence<br>|
| Experimental: 4<br>Standard Treatment with Contingency Management for 24 weeks with a 0.5 probability of winning prizes for each negative sample submitted | Behavioral: Contingency Management<br>* Prizes given for targeted behavior of abstinence<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| longest duration of negative breath samples submitted |  | active phase and throughout follow-up phase | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| subjective reports of alcohol use |  | baseline and each follow-up | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Alcohol Abuse, Contingency Management, Treatment Duration