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NCT03786224 · ClinicalTrials.gov registry record · NA
Pilot Trial of Contingency Management for Long-Term Cannabis Abstinence
A NA study, sponsored by Massachusetts General Hospital.
- Completed
- Registry status
- NA
- Development phase
- 6
- Enrollment target
NCT03786224: Completed NA study, sponsored by Massachusetts General Hospital.
NCT03786224 is a NA study that has completed, run by Massachusetts General Hospital. The registered enrollment target is 6 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (100% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT03786224, a NA study, has completed, sponsored by Massachusetts General Hospital.
- COMPLETED
- Registry status
- NA
- Development phase
- 6 participants
- Enrollment target
Study Summary
This study is a critically important first-of-its-kind investigation of the potential research utility of using contingency management to examine long-term changes in cannabis use with six months of abstinence. These pilot data will inform a later trial which will focus on testing the longitudinal relationships between adolescent cognition and cannabis use, questions of high and growing public health significance given adolescents' increased access to cannabis with legalization.
Primary Outcome
Cannabis abstinence will be indexed by progressively decreasing quantitative levels (ng/mL) of 11-nor-delta-9-THC-9-carboxylic acid (THCCOOH), the primary cannabis metabolite, in urine. Residual cannabinoid excretion will be differentiated from new cannabis exposure using a statistical model developed by Schwilke and colleagues (2011). This model was empirically derived from urine CN-THCCOOH concentration ratios of consecutively collected specimen pairs (current specimen/prior specimen). This mo
Interventions
- BEHAVIORAL Contingency Management
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 6 participants |
| Start Date | 2019-07-01 |
| Est. Completion | 2019-12-06 |
| Phase | NA |
What the finished NCT03786224 record still lists
NCT03786224 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 6 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (100% lower).
The record links to 0 conditions, and to 1 intervention - of which Contingency Management is the first listed.
NCT03786224 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT03786224 about?
NCT03786224 is a clinical study titled "Pilot Trial of Contingency Management for Long-Term Cannabis Abstinence". This study is a critically important first-of-its-kind investigation of the potential research utility of using contingency management to examine long-term changes in cannabis use with six months of abstinence. These pilot data will inform a later trial which will focus on testing the longitudinal r...
What is the current status of trial NCT03786224?
This trial is currently completed. It is a NA study. The enrollment target is 6 participants. The study started on 2019-07-01. Estimated completion is 2019-12-06.
What interventions are being tested in trial NCT03786224?
The interventions under investigation include: Contingency Management (BEHAVIORAL).
Who is sponsoring clinical trial NCT03786224?
This trial is sponsored by Massachusetts General Hospital, which has 2,032 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT03786224's enrollment target sits among peer trials
6 1983rd of 2000 higher than 13 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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