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Completed

NCT Number: NCT00249535

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

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.

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Key information

Conditions

Cocaine Dependence Chemically-Induced Disorders Cocaine-Related Disorders Mental Disorders Substance-Related Disorders

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

UConn Health Center

Farmington, Connecticut, 06030, United States

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Contingency Management

Behavioral

Rewards (prizes) for abstinence

Primary outcomes

  1. Cocaine use

    Time frame: baseline and each follow-up

Sponsors and collaborators

Lead sponsor

UConn Health

Other

Collaborators

  • National Institute on Drug Abuse (NIDA)

Registry information

Official study title

Vouchers vs. Prizes for Cocaine-Dependent Methadone Patients

Important dates

Study start
2005
Primary completion
2011
Study completion
2011
First posted
Nov 7, 2005
Registry last updated
Mar 30, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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