A Transtheoretical Model Group Therapy for Cocaine

NCT ID: NCT00178776

Last Updated: 2017-01-11

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

PHASE1

Total Enrollment

138 participants

Study Classification

INTERVENTIONAL

Study Start Date

2003-10-31

Study Completion Date

2007-06-30

Brief Summary

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The purpose of this study is to determine the feasibility and promise of a recently manualized group therapy based on the Transtheoretical Model for cocaine use disorders.

Detailed Description

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Cocaine use in the general population is a significant and costly problem. Novel and innovative interventions targeting cocaine abuse are needed. The Transtheoretical Model of behavior change (TTM) offers a comprehensive framework for understanding, measuring, and intervening in behavior change and provides a strong theoretical foundation upon which effective treatments for substance abuse can be developed. The proposed Stage 1 research will pilot test a novel and innovative behavioral group therapy for cocaine users based on the TTM. In Phase 1, investigators will modify the newly developed Group Treatment for Substance Abuse: A Stages-of-Change Therapy Manual (Velasquez, Maurer, Crouch \& DiClemente, 2001) to specifically target cocaine abuse resulting in a twelve-session, group intervention and accompanying therapy manual based on the TTM stages and processes of change: six "early stage" sessions targeting the experiential processes of change, and six "later stage" sessions targeting the behavioral processes of change. Phase 2 will consist of a pilot trial to evaluate the TTM group therapy with cocaine abusing patients. A randomized, controlled, between groups design will be used in which cocaine abusers (N=80) are assigned to one of two group treatment conditions: TTM therapy or Education/Advice. Participants will be recruited from Houston and surrounding communities through the Substance Abuse Research Center at the University of Texas Health Science Center Mental Sciences Institute. We expect the delivery of the TTM therapy for cocaine users to be feasible and acceptable, and to produce significant patient improvement. Cocaine outcomes will be assessed via objective (urine and drug analysis) and self-report measures. This Stage I research will contribute important theoretical and empirical information concerning the promise of a new and innovative intervention for cocaine abusers, and will provide the basis for a larger efficacy trial.

Conditions

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Cocaine Use Disorders

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Investigators Outcome Assessors

Study Groups

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Transtheoretical Model Group

Group Type EXPERIMENTAL

Transtheoretical Model Group Therapy

Intervention Type BEHAVIORAL

Education / Advice

Group Type ACTIVE_COMPARATOR

Education & Advice

Intervention Type BEHAVIORAL

Interventions

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Transtheoretical Model Group Therapy

Intervention Type BEHAVIORAL

Education & Advice

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* (1) judged to be in generally good physical and psychiatric health except for possible acute drug related problems;
* (2) willing and able to participate in the 6-week, group outpatient treatment;
* (3) able to provide the name of at least one person who can generally locate their whereabouts; and
* (4) willing to be followed for 3 months after treatment ends.

Potential subjects with simple drug charges whose legal contacts are willing to forego data revelation will be included. Although cocaine dependence will be the primary drug for which patients are seeking treatment, we will not exclude participants who are abusing additional substances.

Exclusion Criteria

Individuals will be ineligible for study participation based on the following criteria:

* (1) current diagnosis of an Axis I psychiatric disorder other than cocaine dependence;
* (2) current psychiatric symptoms requiring medication;
* (3) severe medical, cognitive and /or psychiatric impairment that precludes cooperation with study protocol;
* (4) substance withdrawal symptoms requiring medical attention;
* (5) currently receiving other psychosocial therapy for substance abuse with the exception of AA, NA or CA;
* (6) impending incarceration;
* (7) inability to read, write, speak English;
* (8) inability or unwillingness to participate in the 6-week, group outpatient treatment (e.g., halfway house or other aftercare program restrictions).
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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The University of Texas Health Science Center, Houston

OTHER

Sponsor Role collaborator

National Institute on Drug Abuse (NIDA)

NIH

Sponsor Role lead

Responsible Party

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Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Mary Marden Velasquez, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

University of Texas Houston Medical School, Dept. of Family & Community Medicine

Locations

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University of Texas Houston Mental Sciences Institute

Houston, Texas, United States

Site Status

Countries

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United States

References

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Velasquez, M. M., Maurer, G. G., Crouch, C., & DiClemente, C. C. (2001). Group treatment for substance abuse: A stages-of-change therapy manual. New York: Guilford Press.

Reference Type BACKGROUND

Other Identifiers

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R01DA015453-02

Identifier Type: NIH

Identifier Source: secondary_id

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UT CPHS ID - HSC-MS-02-138

Identifier Type: OTHER

Identifier Source: secondary_id

5R01DA015453-02

Identifier Type: NIH

Identifier Source: org_study_id

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