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| ID | Type | Description | Link |
|---|---|---|---|
| NIDA R01 DA062443 | Other Grant/Funding Number | National Institute on Drug Abuse (NIH/NIDA) |
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| Name | Class |
|---|---|
| National Institutes of Health (NIH) | NIH |
| National Institute on Drug Abuse (NIDA) | NIH |
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This study evaluates the effects of cannabis use reduction among adults diagnosed with cannabis use disorder (CUD). Participants will undergo an 8-week intervention combining motivational interviewing, computerized cognitive behavioral therapy (CBT4CBT), and financial incentives for reduction in urinary cannabinoids. The study aims to assess improvements in cannabis-related problems, sleep, cognitive performance, CUD severity, and quality of life.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| CBT4CBT (Computerized Cognitive Behavioral Therapy) | Behavioral | Participants will receive one therapist-led motivational interviewing/goal setting session followed by 7 sessions of computerized CBT4CBT. | ||
| Motivational Interviewing | Behavioral | Participants will receive one therapist-led motivational interviewing/goal setting session followed by 7 sessions of computerized CBT4CBT. | ||
| Contingency Management | Behavioral | Patients will receive contingent reinforcers (financial incentives for reduction in urinary cannabinoids). |
| Measure | Description | Time Frame |
|---|---|---|
| Cannabis-Related Problems | Rutgers Marijuana Problem Index (RMPI)- higher scores associated with worse outcomes. | Week 8 (end-of-treatment) |
| Measure | Description | Time Frame |
|---|---|---|
| Total minutes of sleep per night | Measured via Fitbit Charge. | Week 8 (end-of-treatment) |
| Minutes of light sleep per night | Measured via Fitbit Charge. |
| Measure | Description | Time Frame |
|---|---|---|
| DSM-5 CUD Criteria and Severity | Clinician-administered semi-structured interview for assessing past month DSM-5 CUD symptoms | Week 8 (end-of-treatment) |
| Quality of Life Enjoyment and Satisfaction-Q-SF |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Rachel Tomko, PhD | Contact | (843) 792-5447 | tomko@musc.edu | |
| Erin McClure, PhD | Contact | (843) 792-7192 | mccluree@musc.edu |
| Name | Affiliation | Role |
|---|---|---|
| Rachel Tomko, PhD. | Medical University of South Carolina | Principal Investigator |
| Erin McClure, PhD. | Medical University of South Carolina | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Medical University of South Carolina | Recruiting | Charleston | South Carolina | 29425 | United States |
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| ID | Term |
|---|---|
| D062405 | Motivational Interviewing |
| ID | Term |
|---|---|
| D037001 | Directive Counseling |
| D003376 | Counseling |
| D008605 | Mental Health Services |
| D004191 | Behavioral Disciplines and Activities |
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| Week 8 (end-of-treatment) |
| Minutes of rapid eye movement (REM) sleep per night | Measured via Fitbit Charge. | Week 8 (end-of-treatment) |
| Minutes of deep sleep per night | Measured via Fitbit Charge. | Week 8 (end-of-treatment) |
| Sleep efficiency rating | "Sleep score" as provided by Fitbit Charge. Range is 1-100 with higher scores indicating better sleep quality/efficiency. | Week 8 (end-of-treatment) |
| Rey Auditory Verbal Learning Test (Verbal Memory) Age-Adjusted Standard Score | NIH Toolbox assessment; Higher scores indicate better cognitive functioning in this domain. | Week 8 (end-of-treatment) |
| Face/Name Associative Memory Test (Visual Memory) Age-Adjusted Standard Score | NIH Toolbox assessment; Higher scores indicate better cognitive functioning in this domain. | Week 8 (end-of-treatment) |
| Oral Symbol Digit Test Age-Adjusted Standard Score | NIH Toolbox assessment; Higher scores indicate better cognitive functioning in this domain. | Week 8 (end-of-treatment) |
| Pattern Comparison Processing Speed Test (Processing Speed) Age-Adjusted Standard Score | NIH Toolbox assessment; Higher scores indicate better cognitive functioning in this domain. | Week 8 (end-of-treatment) |
Self-report measure- range is 0-100% and higher percentages are associated with better outcomes
| Week 8 (end-of-treatment) |
| D006296 | Health Services |
| D005159 | Health Care Facilities Workforce and Services |