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NCT03111667 · ClinicalTrials.gov registry record · NA

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

A NA study, sponsored by University of Washington.

Completed
Registry status
NA
Development phase
264
Enrollment target

NCT03111667: Completed NA study, sponsored by University of Washington.

NCT03111667 is a NA study that has completed, run by University of Washington. The registered enrollment target is 264 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (81% lower). According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT03111667, a NA study, has completed, sponsored by University of Washington.

COMPLETED
Registry status
NA
Development phase
264 participants
Enrollment target

Study Summary

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.

Primary Outcome

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

Interventions

  • OTHER Treatment as Usual
  • BEHAVIORAL Teen Marijuana Check Up
  • BEHAVIORAL Gold Standard Coaching
  • BEHAVIORAL As Needed Coaching

Trial Details

FieldValue
Enrollment Target 264 participants
Start Date 2016-05-15
Est. Completion 2023-02-28
Phase NA
University of Washington

1,048 total trials

What the finished NCT03111667 record still lists

NCT03111667 is an interventional study that assigns participants to a tested intervention. The registered 264 participants enrollment target is mid-sized for trials with a published cap, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (81% lower).

The record links to 0 conditions, and to 4 interventions - of which Treatment as Usual is the first listed.

NCT03111667 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT03111667 about?

NCT03111667 is a clinical study titled "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.

What is the current status of trial NCT03111667?

This trial is currently completed. It is a NA study. The enrollment target is 264 participants. The study started on 2016-05-15. Estimated completion is 2023-02-28.

What interventions are being tested in trial NCT03111667?

The interventions under investigation include: Treatment as Usual (OTHER), Teen Marijuana Check Up (BEHAVIORAL), Gold Standard Coaching (BEHAVIORAL), As Needed Coaching (BEHAVIORAL).

Who is sponsoring clinical trial NCT03111667?

This trial is sponsored by University of Washington, which has 1,048 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT03111667's enrollment target sits among peer trials

264 395th of 2000 higher than 1,605 of 2,000 other NA trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT03111667, the US trial registry maintained by the National Library of Medicine. NCT03111667 (mid enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.