NCT01329315

Brief Summary

This study examines the impact of tailored computer-delivered and therapist-delivered brief motivations prevention/interventions both for adolescents who have not initiated marijuana use (prevention), and those who use marijuana (intervention). Key moderators of prevention/intervention effectiveness will be examined, including behavioral intentions, self-efficacy, stage of change, school involvement, susceptibility to peer pressure, and potential health consequences such as STD/HIV risk behaviors. This project will provide the critical first step toward the development and implementation of marijuana use prevention/intervention programs that have the potential to be delivered to a large segment of youth who seek care in our nation's primary care settings.

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
1,141

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Sep 2005

Longer than P75 for not_applicable

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

September 1, 2005

Completed
5.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2010

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

March 29, 2011

Completed
7 days until next milestone

First Posted

Study publicly available on registry

April 5, 2011

Completed
1.6 years until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2012

Completed
Last Updated

April 7, 2014

Status Verified

April 1, 2014

Enrollment Period

5.2 years

First QC Date

March 29, 2011

Last Update Submit

April 3, 2014

Conditions

Outcome Measures

Primary Outcomes (1)

  • marijuana use

    initiation of marijuana use or escalation of use

    12 months

Secondary Outcomes (2)

  • alcohol, tobacco, and illicit drug use

    12 months

  • risk involvement

    12 months

Study Arms (3)

BMI-T

ACTIVE COMPARATOR

Brief Motivational Intervention (BMI-T): social worker/therapist-delivered intervention (25-minute tailored structured module).

Behavioral: BMI-T

BMI-C

ACTIVE COMPARATOR

Computer-delivered intervention (BMI-C): computerized tailored 25-minute intervention.

Behavioral: BMI-C

DPB

NO INTERVENTION

Drug Prevention Booklet (DPB)- National Institute on Drug Abuse (NIDA)-developed drug prevention booklet to address preventing marijuana initiation, and marijuana use.

Interventions

BMI-TBEHAVIORAL

Brief Motivational Intervention (BMI-T): social worker/therapist-delivered intervention (25-minute tailored structured module).

BMI-T
BMI-CBEHAVIORAL

Computer-delivered intervention (BMI-C): computerized tailored 25-minute intervention.

BMI-C

Eligibility Criteria

Age12 Years - 18 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • ability to provide informed assent
  • access to a parent or guardian for parental consent

You may not qualify if:

  • adolescents who do not understand English
  • adolescents deemed unable to provide informed consent by research staff (e.g., cognitive issues)
  • adolescents who come to the clinic because of sexual assault or suicide attempt, or are presenting with high psychological distress requiring intensive attention
  • prisoners
  • adolescents who are deaf
  • adolescents with a sibling or other household member in the study will be excluded from Phase II

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (1)

  • Walton MA, Bohnert K, Resko S, Barry KL, Chermack ST, Zucker RA, Zimmerman MA, Booth BM, Blow FC. Computer and therapist based brief interventions among cannabis-using adolescents presenting to primary care: one year outcomes. Drug Alcohol Depend. 2013 Oct 1;132(3):646-53. doi: 10.1016/j.drugalcdep.2013.04.020. Epub 2013 May 25.

MeSH Terms

Conditions

Marijuana Use

Condition Hierarchy (Ancestors)

BehaviorSubstance-Related DisordersMental Disorders

Study Officials

  • Frederic C Blow, PhD

    University of Michigan

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
HEALTH SERVICES RESEARCH
Intervention Model
FACTORIAL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

March 29, 2011

First Posted

April 5, 2011

Study Start

September 1, 2005

Primary Completion

November 1, 2010

Study Completion

November 1, 2012

Last Updated

April 7, 2014

Record last verified: 2014-04