Vouchers vs. Prizes for Cocaine-Dependent Methadone Patients - 2

NCT ID: NCT00249535

Last Updated: 2012-03-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

240 participants

Study Classification

INTERVENTIONAL

Study Start Date

2005-03-31

Study Completion Date

2011-07-31

Brief Summary

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The purpose of this study is to compare voucher-based contingency management (CM) procedures to a lower-cost CM system that provides opportunities to win prizes. Cocaine-dependent outpatients are randomly assigned to (a) standard treatment, (b) standard treatment plus usual magnitude prize CM, (c) standard treatment plus higher magnitude prize CM, or (d) standard treatment plus voucher CM. Urine and breath samples are collected 2-3x/week for 14 weeks. Follow-up interviews are conducted at 1,3,6 and 9 months following intake during which substance use and psychosocial functioning are assessed.

Detailed Description

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Conditions

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Cocaine Dependence

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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1

standard treatment plus usual magnitude prize CM

Group Type EXPERIMENTAL

Contingency management

Intervention Type BEHAVIORAL

Rewards (prizes) for abstinence

2

standard treatment plus higher magnitude prize CM

Group Type EXPERIMENTAL

Contingency management

Intervention Type BEHAVIORAL

Rewards (prizes) for abstinence

3

standard treatment plus voucher CM

Group Type EXPERIMENTAL

Contingency management

Intervention Type BEHAVIORAL

Rewards (prizes) for abstinence

Interventions

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Contingency management

Rewards (prizes) for abstinence

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* age \> 18 years
* current DSM-IV diagnosis of cocaine dependence
* received methadone treatment at the clinic for at least 3 months
* on a stable dose of methadone (no changes in dosing) for at least one month and not presently requesting a dose alteration
* submitted one or more clinic-collected cocaine positive urine samples in the previous 3 months
* English speaking
* pass a brief quiz related to understanding of the informed consent form

Exclusion Criteria

* have a serious, uncontrolled psychiatric illness (e.g., acute schizophrenia, bipolar disorder, severe or psychotic major depression, or suicide risk)
* have dementia (\<23 on the Mini Mental State Exam; Folstein et al. 1975)
* are in recovery from pathological gambling
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute on Drug Abuse (NIDA)

NIH

Sponsor Role collaborator

UConn Health

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Nancy Petry, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

UConn Health

Locations

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UConn Health Center

Farmington, Connecticut, United States

Site Status

Countries

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United States

Other Identifiers

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R01DA013444

Identifier Type: NIH

Identifier Source: secondary_id

View Link

NIDA-13444-2

Identifier Type: -

Identifier Source: org_study_id

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