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Enhanced and Attendance-based Prize CM in Community Settings

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00606853
First Posted: February 5, 2008
Last Update Posted: November 21, 2011
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Collaborator:
National Institute on Drug Abuse (NIDA)
Information provided by (Responsible Party):
UConn Health
  Purpose

The purpose of this study is to address the conditions under which prize contingency management (CM) for abstinence and attendance may improve outcomes of cocaine-dependent patients.

For patients who initiate treatment with a cocaine-positive urine specimen, we will evaluate the efficacy of two CM procedures relative to standard, non-CM treatment. The two CM procedures will be provided as additions to standard care and will reinforce drug abstinence but will differ in expected magnitudes of prizes patients can earn, especially during early stages of abstinence. They will provide expected magnitudes of winning about $250 and $560, respectively. We expect that both CM conditions will improve retention and abstinence relative to the standard treatment, non-CM condition. If the enhanced CM condition engenders better outcomes than the $250 CM condition, this finding would suggest that patients initiating treatment while actively using cocaine may best be treated with relatively high reinforcement prize CM as an adjunct to standard care.

For patients who initiate treatment with a cocaine-negative urine specimen, we will evaluate the efficacy of a CM procedure that reinforces treatment attendance. The expected magnitude of winnings will be about $250, and again CM treatment will be in addition to standard care. This CM condition will be compared to standard treatment without CM as well as to a CM treatment that provides a similar magnitude of reinforcement, but contingent upon abstinence. Results from this study will inform an important clinical question of whether simply reinforcing attendance can improve clinical outcomes. Increased retention may result in greater exposure to therapeutic processes that may reduce drug use, especially among patients who begin treatment having already achieved some abstinence. We will also evaluate the cost-effectiveness of CM by examining the effects of the interventions on hospitalizations, medical and psychiatric care, criminal justice costs, and productivity.


Condition Intervention Phase
Cocaine Dependence Behavioral: Contingency Management Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Enhanced and Attendance-based Prize CM in Community Settings

Further study details as provided by UConn Health:

Primary Outcome Measures:
  • longest continuous period of cocaine abstinence [ Time Frame: baseline and at each follow-up ]

Enrollment: 443
Study Start Date: October 2003
Study Completion Date: April 2009
Primary Completion Date: April 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Standard Treatment plus prize contingency management for abstinence with an expected probability of winning about $250 in prizes and twice-weekly breath and urine samples.
Behavioral: Contingency Management
Rewards valued $1-$100 for abstinence or treatment attendance
Experimental: 2
Standard Treatment plus prize contingency management for abstinence with an expected probability of winning about $560 in prizes and twice-weekly breath and urine samples.
Behavioral: Contingency Management
Rewards valued $1-$100 for abstinence or treatment attendance
Experimental: 3
Standard Treatment plus prize contingency management for attendance with an expected probability of winning about $250 in prizes and twice-weekly breath and urine samples.
Behavioral: Contingency Management
Rewards valued $1-$100 for abstinence or treatment attendance
No Intervention: 4
Standard Treatment

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Age > 18 years
  • Current DSM-IV diagnosis of cocaine dependence
  • A cocaine-positive urine sample submitted during the first two scheduled treatment days at the center
  • Willing to provide names, addresses and phone numbers of individuals to assist in locating the patient for follow-up evaluations
  • English speaking
  • Willing to sign informed consent.

Exclusion Criteria:

  • Serious, uncontrolled psychiatric illness (e.g., acute schizophrenia, bipolar disorder, severe or psychotic major depression, or suicide risk)
  • Dementia (<23 on the Mini Mental State Exam; Folstein et al. 1975)
  • In recovery from pathological gambling
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00606853


Locations
United States, Connecticut
UConn Health Center
Farmington, Connecticut, United States, 06030
Sponsors and Collaborators
UConn Health
National Institute on Drug Abuse (NIDA)
Investigators
Principal Investigator: Nancy M Petry, Ph.D. UConn Health Center
  More Information

Responsible Party: UConn Health
ClinicalTrials.gov Identifier: NCT00606853     History of Changes
Other Study ID Numbers: 04-008
P50DA009241 ( U.S. NIH Grant/Contract )
First Submitted: January 22, 2008
First Posted: February 5, 2008
Last Update Posted: November 21, 2011
Last Verified: November 2011

Keywords provided by UConn Health:
Substance abuse
Contingency Management

Additional relevant MeSH terms:
Cocaine-Related Disorders
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders


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