The Teen Marijuana Check-Up (TMCU3)

October 21, 2008 updated by: University of Washington

Reaching and Motivating Change in Teen Marijuana Smokers

This behavioral research is an efficacy trial evaluating an intervention called "The Teen Marijuana Check-Up" with non-treatment seeking adolescent marijuana users.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Three hundred adolescents who smoke marijuana (ages 14-19), recruited in four Seattle-area high schools, will be enrolled in the trial. Participants will be recruited either through in-class presentations focusing on marijuana or via referrals from school staff. They will first be assessed regarding use of marijuana, alcohol, and other drugs, as well as pertinent attitudes and goals. Participants will then be randomly assigned to one of three conditions.

  • The experimental intervention is a two-session motivational enhancement treatment. A personalized feedback report, containing information from the participant's assessment as well as normative comparison data, is reviewed, with the Health Educator employing motivational interviewing strategies intended to enhance motivation for reduction or cessation of marijuana use. Specific goals for change and behavior change strategies are discussed with participants who wish support to change their marijuana use.
  • The comparison condition involves two educational sessions focusing on the health and behavioral effects of marijuana.
  • The third condition (delayed treatment control) involves a minimal baseline assessment followed three months later by a reassessment interview. Those assigned to this condition will then be given their choice of either active treatment.

Following completion of their two intervention sessions, participants in the two active treatments will be offered an additional four sessions of cognitive-behavioral skills training in which the focus is strategies in quitting marijuana. All participants will be reassessed at 3 and 12 months following their initial assessment interviews.

Study Type

Interventional

Enrollment (Actual)

310

Phase

  • Phase 2

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

14 years to 19 years (Child, Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria: Individuals who contact the project will be screened according to the following inclusion criteria:

  • age (14-19 years old),
  • grade level (freshmen through seniors) and
  • marijuana use (smoked 9 or more days in past 30).

Exclusion Criteria: Individuals will be excluded if:

  • they are not fluent in English,
  • they have a thought disorder that precludes full participation,
  • they refuse to accept randomization to condition.

In addition to the inclusion and exclusion criteria, participants who appear to be in psychological or physical distress will be assessed further and referred to other services as appropriate. The need for other services will not necessarily preempt participation in the TMCU unless the individual is incapable or unwilling to complete the protocol. As was the case in our Stage 1b trial, all ineligible applicants will be offered a single feedback session, and the Strategies That Work booklet will be offered to those who indicate any interest in reducing or quitting marijuana use.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 1
Motivational enhancement therapy
Behavioral: Motivational enhancement therapy
Personal feedback with counselor using motivational interviewing strategies.
Active Comparator: 2
Marijuana education
Behavioral: Marijuana education
Information about health and behavioral effects of marijuana use.
No Intervention: 3
Delayed treatment control condition

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Self-report of marijuana use
Time Frame: 3 months and 12 months
3 months and 12 months

Secondary Outcome Measures

Outcome Measure
Time Frame
Accepting abstinence-focused counseling
Time Frame: 3 months and 12 months
3 months and 12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Washington

Collaborators

National Institute on Drug Abuse (NIDA)

Investigators

  • Principal Investigator: Roger A Roffman, DSW, University of Washington School of Social Work

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2004

Primary Completion (Actual)

June 1, 2008

Study Completion (Actual)

June 1, 2008

Study Registration Dates

First Submitted

July 5, 2006

First Submitted That Met QC Criteria

July 5, 2006

First Posted (Estimate)

July 10, 2006

Study Record Updates

Last Update Posted (Estimate)

October 23, 2008

Last Update Submitted That Met QC Criteria

October 21, 2008

Last Verified

October 1, 2008

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 01-8666-G-05
  • R01DA014296 (U.S. NIH Grant/Contract)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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