INTERVENTIONALCOMPLETEDNCT03111667

A Hybrid Effectiveness-Implementation Trial of a School-Based Teen Marijuana Checkup

A hybrid effectiveness-implementation trial that is designed to assess the effectiveness of an intervention (The Teen Marijuana Check-Up) when delivered in real world settings. In addition, the study will assess the frequency of coaching support needed by providers to maintain adherent skill levels.

Locally preserved from ClinicalTrials.govOpen ClinicalTrials.govlast source update 2023-05-15

What this record can show

Protocol only - no registry results posted

This locally preserved record separates the registered protocol from source-reported registry results. Neither is a treatment recommendation.

Registry facts

Study at a glance

Phase: NA
Enrollment: 264 (ACTUAL)
Start date: 2016-05-15
Sponsor: University of Washington
Design: RANDOMIZED · PARALLEL · TREATMENT
Locations: 1
Results record: Not present in registry snapshot

The objectives of the proposed study are to advance Type 2 translational science through an effectiveness-implementation "type 2" hybrid design to evaluate the clinical and cost-effectiveness of an efficacious intervention (Teen Marijuana Check-Up, TMCU) and compare the feasibility, acceptability, impact and cost-effectiveness of two integrity monitoring support systems. Marijuana continues to be the most frequently used drug in the U.S. and adolescent use is associated with negative effects such as academic failure, dropout, and emotional problems. Although marijuana is the most common presenting substance for 12-17 year olds seeking substance abuse treatment, few voluntarily seek indicated services. The TMCU is a brief, school-based motivational enhancement therapy approach that has been systematically evaluated in three randomized controlled trials with reliable beneficial effects in prompting voluntary participation in the intervention and decreasing adolescent marijuana use. With TMCU now well-positioned for broad dissemination, its public health impact may be enhanced by further research addressing: 1) to what extent its documented efficacy under controlled conditions translates to real-world effectiveness, and 2) what support systems are most useful in promoting sustained integrity in its delivery by the available school-based personnel. The proposed type 2 effectiveness/implementation hybrid trial will include randomization at multiple levels. Students will be randomly-assigned in a 1:2 ratio to 'services-as-usual' and TMCU intervention conditions, and school-based personnel identified to deliver TMCU will be randomly-assigned to do so under governance of a 'gold-standard' training/oversight support system (i.e., rapid, continual performance-based feedback and weekly coaching about integrity of TMCU delivery) or a less resource-intensive support system similarly including performance-based feedback but with process benchmarking (defined by prior performance of research interventionists in TMCU efficacy trials) prompting points at which these school-based personnel receive purveyor coaching. Expected trial participation of ten schools will enable recruitment of 30 TMCU interventionists, and access to a pool of 250 marijuana-using students during a two-year implementation period. This nested design (e.g., students in schools/intervention conditions; interventionists in schools/training/oversight support systems) will utilize multilevel models in study analyses to account for possible school-level clustering. A cost analysis will also be conducted. Longitudinal outcome and process data will be collected from school based staff (6, 12, 18, \& 24 month follow-ups) and students (3 and 6 month followups). The trial will occur in Washington state at an opportune time when legislative, fiscal, and socio-cultural factors converge to heighten potential adolescent exposure to marijuana-related harms-represents an effort by this investigative team to respond to such local challenges in a manner that will advance understanding of best practices for dissemination and implementation of this and other efficacious, school-based interventions

Linked local records

Related local records

Local links use governed condition terms or exact source-reported intervention names. They are navigation candidates, not efficacy claims.

Conditions

No published condition report matched.

Cannabinoids and active compounds

No governed compound link was found.

Medicines

No exact medicine-name link was found.

Research network

Researchers and organizations

Bryan Hartzler Denise Walker Kevin King

Interventions

What was registered

BEHAVIORAL

Teen Marijuana Check Up

Two session Motivational Enhancement Therapy intervention. The first MET session relies on the use of motivational interviewing skills to hear the student's history and current concerns with marijuana. The second session involves the provision of a personalized feedback report based on the student's baseline assessment that reviews normative feedback on marijuana use, consequences experienced, money spent on marijuana, other drug and alcohol use, social supports for quitting and life goals.

OTHER

Treatment as Usual

Referral to community resources

BEHAVIORAL

Gold Standard Coaching

Weekly coaching and feedback about adherence to Motivational Interviewing Skills and intervention delivery in a group setting.

BEHAVIORAL

As Needed Coaching

As needed coaching and feedback about adherence to Motivational Interviewing Skills and intervention delivery in an individual setting.

Eligibility

Population and criteria

Sex: ALL
Minimum age: 14 Years
Maximum age: Not reported
Healthy volunteers: Accepted

Eligibility criteria

Group 1: Administrators from local High Schools.

Inclusion criteria

age 21 and older
in an administrative role at one of the 10 participating high schools.

Exclusion criteria

none Group 2: School Staff- Climate Survey Respondents.

Inclusion criteria

age 21 and older
in a staff position at one of the 10 participating high schools.

Exclusion criteria

none Group 3: School Based Staff - Interventionists.

Inclusion criteria

willing to participate in TMCU implementation procedures (i.e., randomization to coaching group, training, supervision and feedback, monitored performance via audio-recorded sessions),
willing to share some personal demographic data,
permission from supervisor,
a two -year commitment and availability to participate in the project, and
willingness to have sessions audio-recorded for feedback.

Exclusion criteria

Otherwise eligible SBS will be excluded if
plan to leave the school within the next year or,
have an extended absence (e.g., 3 month parental leave, semester sabbatical) planned. Group 4: Marijuana Using Students.

Inclusion criteria

age (14-21 years old),
grade (9-12)
marijuana use
willing to have sessions audio-recorded.

Exclusion criteria

Individuals otherwise eligible will be excluded if:

primary outcomes

primary measures

Student Participants: Change in Number of Marijuana Use Days

Time frame: baseline, 3, and 6 month follow-up

self-reported, retrospective number of marijuana use days in the past 60.

School Based Interventionists - change in behavioral fidelity

Time frame: within two weeks before training, 2 week, 6, 12, 18, and 24 month follow-up post training

Adherent MITI score.

secondary outcomes

secondary measures

School Based Interventionists - implementation acceptability

Time frame: within two weeks before training, 2 week, 6, 12, 18, and 24 month follow-up post training

School Based Interventionists - self-reported satisfaction with their experience in TMCU

Student Participants - change in marijuana related problems

Time frame: baseline, 3, and 6 month follow-up

self-reported retrospective marijuana problems

Publications

Locally readable linked articles

linked publication

Implementing the teen marijuana check-up in schools-a study protocol.

Implementation Science : IS · Free full text

Snapshot provenance

Snapshot: a871b056-933a-42f5-a665-702ed06aac41
Retrieved: 11/09/2026, 14:14:24
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