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

This study has been completed.
Sponsor:
Collaborator:
National Institute on Drug Abuse (NIDA)
Information provided by (Responsible Party):
University of Connecticut Health Center
ClinicalTrials.gov Identifier:
NCT00249535
First received: November 3, 2005
Last updated: March 29, 2012
Last verified: March 2012
History of Changes

November 3, 2005
March 29, 2012
March 2005
July 2011   (final data collection date for primary outcome measure)
Cocaine use [ Time Frame: baseline and each follow-up ] [ Designated as safety issue: No ]
Cocaine use
Complete list of historical versions of study NCT00249535 on ClinicalTrials.gov Archive Site
Not Provided
Not Provided
Not Provided
Not Provided
 
Vouchers vs. Prizes for Cocaine-Dependent Methadone Patients - 2
Vouchers vs. Prizes for Cocaine-Dependent Methadone Patients

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.
Not Provided
Interventional
Not Provided
Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Cocaine Dependence
Behavioral: Contingency management
Rewards (prizes) for abstinence
  • Experimental: 1
    standard treatment plus usual magnitude prize CM
    Intervention: Behavioral: Contingency management
  • Experimental: 2
    standard treatment plus higher magnitude prize CM
    Intervention: Behavioral: Contingency management
  • Experimental: 3
    standard treatment plus voucher CM
    Intervention: Behavioral: Contingency management
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
240
July 2011
July 2011   (final data collection date for primary outcome measure)

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
Both
18 Years and older
No
Contact information is only displayed when the study is recruiting subjects
United States
 
NCT00249535
NIDA-13444-2, R01DA013444
No
University of Connecticut Health Center
University of Connecticut Health Center
National Institute on Drug Abuse (NIDA)
Principal Investigator: Nancy Petry, Ph.D. University of Connecticut Health Center
University of Connecticut Health Center
March 2012

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP