Pilot Trial of Contingency Management for Long-Term Cannabis Abstinence

NCT ID: NCT03786224

Last Updated: 2024-08-02

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 6 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2019-07-01
• Study Completion Date: 2019-12-06

Brief 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.

Conditions

Cannabis Use; Adolescent Behavior

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: OTHER
• Blinding Strategy: NONE

Study Groups

Abstinent

Group Type: EXPERIMENTAL

Contingency Management

Intervention Type: BEHAVIORAL

Six months of cannabis abstinence will be incentivized using a standard contingency management approach involving an escalating schedule of payment for abstinence and attendance.

Interventions

Contingency Management

Six months of cannabis abstinence will be incentivized using a standard contingency management approach involving an escalating schedule of payment for abstinence and attendance.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Male and female adolescents actively enrolled in a middle or high school in the Boston area who are between the ages of 13 and 19 (inclusive);
• Average use of cannabis at least 3 times per week during the 3 months prior to study enrollment;
• Cannabis use reported within 7 days of study enrollment;
• No immediate plan to discontinue cannabis use;
• Have a parent or legal guardian who is competent and willing to provide written informed consent for the active study phase (if under the age of 18);
• Competent and willing to provide written informed assent for the active study phase (if under the age of 18);
• Competent and willing to provide written informed consent (if age 18 or older);
• Able to communicate in English language;
• Have a parent/guardian who can communicate in English language;
• Able to commit to 27 study visits in approximately 6 months;
• Able to safely participate in the protocol and appropriate for outpatient level of care, in the opinion of the investigator.

Exclusion Criteria

• Any severe developmental delays (including, but not limited to, Autism Spectrum Disorder, Intellectual Disability, and Down Syndrome).

• Minimum Eligible Age: 13 Years
• Maximum Eligible Age: 19 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Massachusetts General Hospital

OTHER

Sponsor Role: lead

Responsible Party

Randi Melissa Schuster

Assistant Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Randi M Schuster, PhD

Role: PRINCIPAL_INVESTIGATOR

Massachusetts General Hospital

Locations

Massachusetts General Hospital

Boston, Massachusetts, United States

Countries

United States

Provided Documents

Document Type: Study Protocol and Statistical Analysis Plan

View Document

Document Type: Informed Consent Form

View Document

Other Identifiers

2018P001848

Identifier Type: -

Identifier Source: org_study_id