Protocol - Assessment of Cannabis Use Disorder
- Age of Initiation of First Cigarette Use - Adult
- Alcohol - 30-Day Quantity and Frequency
- Alcohol - Age of First Use
- Alcohol - Lifetime Use
- Alcohol - Lifetime Use Disorder
- Caffeine Intake
- Cannabis Products, Types, and Modes of Use
- Cigarette Smoking Status - Adolescent
- Cigarette Smoking Status - Adult
- General Cannabis Use
- Substance Use Disorder - Past Year - Alcohol
- Substance Use Disorder - Past Year - Drugs
- Substance Use Disorder - Past Year - Tobacco
- Substances - 30-Day Frequency
- Substances - Age of First Use
- Substances - Lifetime Substance Use Disorder
- Substances - Lifetime Use
- Tobacco (non-cigarette) - Product Use
- Tobacco - 30-Day Quantity and Frequency - Adolescent
- Tobacco - 30-Day Quantity and Frequency - Adult
- Tobacco - Age of Initiation of Use - Adolescent
- Tobacco - Age of Offset of Cigarette Use - Adolescent
- Tobacco - Age of Offset of Cigarette Use - Adult
Description
The Cannabis Use Disorder Identification Test - Revised (CUDIT-R) is a self-administered 8-item questionnaire designed to identify cannabis use disorder in individuals who have used cannabis within the past six months. It assesses harmful/hazardous cannabis use and cannabis use disorder. The CUDIT-R can be used as both a brief screening tool and a rating scale for cannabis use disorder severity. Scores of 8 or more indicate hazardous use. Scores of 12 or more suggest a possible cannabis use disorder.
Specific Instructions
Protocols may include terms and language that could be triggering to respondents. Investigators are encouraged to have resources in place to help respondents cope with triggers as needed.
Availability
This protocol is freely available; permission not required for use.
Protocol
The Cannabis Use Disorder Identification Test - Revised (CUDIT-R)
Have you used any cannabis over the past six months?
[ ] YES
[ ] NO
If YES, please answer the following questions about your cannabis use. Circle the response that is most correct for you in relation to your cannabis use over the past six months
1. How often do you use cannabis?
0[ ]Never
1[ ]Monthly or less
2[ ]2-4 times a month
3[ ]2-3 times a week
4[ ]4 or more times a week
2. How many hours were you “stoned” on a typical day when you had been using cannabis?
0[ ]Less than 1
1[ ]1 or 2
2[ ]3 or 4
3[ ]5 or 6
4[ ]7 or more
3. How often during the past 6 months did you find that you were not able to stop using cannabis once you had started?
0[ ]Never
1[ ]Less than monthly
2[ ]Monthly
3[ ]Weekly
4[ ]Daily or almost daily
4. How often during the past 6 months did you fail to do what was normally expected from you because of using cannabis?
0[ ]Never
1[ ]Less than monthly
2[ ]Monthly
3[ ]Weekly
4[ ]Daily or almost daily
5. How often in the past 6 months have you devoted a great deal of your time to getting, using, or recovering from cannabis?
0[ ]Never
1[ ]Less than monthly
2[ ]Monthly
3[ ]Weekly
4[ ]Daily or almost daily
6. How often in the past 6 months have you had a problem with your memory or concentration after using cannabis?
0[ ]Never
1[ ]Less than monthly
2[ ]Monthly
3[ ]Weekly
4[ ]Daily or almost daily
7. How often do you use cannabis in situations that could be physically hazardous, such as driving, operating machinery, or caring for children:
0[ ]Never
1[ ]Less than monthly
2[ ]Monthly
3[ ]Weekly
4[ ]Daily or almost daily
8. Have you ever thought about cutting down, or stopping, your use of cannabis?
0[ ]Never
2[ ]Yes, but not in the past 6 months
4[ ]Yes, during the past 6 months
Scoring Instructions
This questionnaire was designed for self-administration and is scored by adding each of the 8 items:
- Question 1-7 are scored on a 0-4 scale
- Question 8 is scored 0, 2 or 4
Scores of 8 or more indicate hazardous cannabis use, while scores of 12 or more indicate a possible cannabis use disorder for which further intervention may be required.
Personnel and Training Required
None
Equipment Needs
None
Requirements
| Requirement Category | Required |
|---|---|
| Major equipment | No |
| Specialized training | No |
| Specialized requirements for biospecimen collection | No |
| Average time of greater than 15 minutes in an unaffected individual | No |
Mode of Administration
Self-administered questionnaire
Lifestage
Adult, Senior, Pregnancy
Participants
Adults ages 18 and older
Selection Rationale
The Cannabis Use Disorder Identification Test – Revised (CUDIT-R) is a brief, reliable, and validated instrument for measuring harmful/hazardous levels of cannabis use and cannabis use disorder.
Language
English, Other languages available at source
Standards
| Standard | Name | ID | Source |
|---|
Derived Variables
None
Process and Review
Not Applicable
Protocol Name from Source
The Cannabis Use Disorder Identification Test - Revised (CUDIT-R)
Source
Adamson, S. J., Kay-Lambkin, F. J., Baker, A. L., Lewin, T. J., Thornton, L., Kelly, B. J., & Sellman, J. D. (2010). An improved brief measure of cannabis misuse: The Cannabis Use Disorders Identification Test-Revised (CUDIT-R). Drug and Alcohol Dependence, 110(1-2), 137-143. doi:10.1016/j.drugalcdep.2010.02.017
General References
Adamson, S. J., & Sellman, J. D. (2003). A prototype screening instrument for cannabis use disorder: The Cannabis Use Disorders Identification Test (CUDIT) in an alcohol-dependent clinical sample. Drug and Alcohol Review, 22(3), 309-315. doi:10.1080/0959523031000154454
Lees, R., Lawn, W., Petrilli, K., Brown, A., Trinci, K., Borissova, A., Ofori, S., Mokrysz, C., Curran, H. V., Hines, L. A., & Freeman, T. P. (2025). Persistent increased severity of cannabis use disorder symptoms in adolescents compared to adults: a one-year longitudinal study. European archives of psychiatry and clinical neuroscience, 275(2), 397–406. doi:10.1007/s00406-024-01806-y
Schultz, N. R., Bassett, D. T., Messina, B. G., & Correia, C. J. (2019). Evaluation of the psychometric properties of the cannabis use disorders identification test - revised among college students. Addictive behaviors, 95, 11–15. doi:10.1016/j.addbeh.2019.02.016
Protocol ID
510310
Variables
Export Variables| Variable Name | Variable ID | Variable Description | dbGaP Mapping |
|---|
Measure Name
Patterns of Substance Use
Release Date
January 30, 2025
Definition
Instruments used separately to assess patterns of substance use in adolescents and adults.
Purpose
The purpose of this measure is to determine patterns of tobacco, binge drinking, and other drug use in adolescents and adults.
Keywords
marijuana, cannabis, substance use, substance use disorder, addiction, tetrahydrocannabinol, THC, cannabidiol, CBD, cannabidiol, quantity, frequency, screening, cannabis dependence, Motivation
Measure Protocols
| Protocol ID | Protocol Name |
|---|---|
| 510303 | Patterns of Substance Use - Adolescents |
| 510304 | Patterns of Substance Use - Adults - Binge-Drinking |
| 510305 | Patterns of Substance Use – Calendar Based Method for Detailed Cannabis Use |
| 510306 | Patterns of Substance Use - Alcohol and/or Drug Use |
| 510307 | General Cannabis Use |
| 510308 | Cannabis Products, Types, and Modes of Use |
| 510310 | Assessment of Cannabis Use Disorder |