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The Cannabis Use Problems Identification Test (CUPIT): development, reliability, concurrent and predictive validity
Jan Bashford1, Ross Flett, Jan Copeland
1School of Psychology, Massey University, Palmerston North, New Zealand. jbashford@clear.net.nz
Addiction (Abingdon, England)
|April 21, 2010
Summary
The Cannabis Use Problems Identification Test (CUPIT) is a new, reliable, and valid screening tool for problematic cannabis use. It accurately identifies current and at-risk users, aiding public health efforts to reduce cannabis-related harms.
Area of Science:
- Psychiatry
- Psychology
- Public Health
Background:
- Problematic cannabis use is a significant public health concern.
- Brief, validated screening tools are needed for early detection and intervention.
Purpose of the Study:
- To empirically construct and validate the Cannabis Use Problems Identification Test (CUPIT).
- To develop a brief, self-report instrument for identifying problematic cannabis use.
Main Methods:
- A three-phase prospective design was used, generating items from literature and expert consultation.
- Psychometric properties were tested in 212 high-risk adolescents and adults.
- Validation involved established measures and DSM-IV/ICD-10 diagnoses as the criterion standard.
Main Results:
- The 16-item CUPIT demonstrated good to excellent reliability (test-retest: 0.89-0.99; internal consistency: 0.92, 0.83).
- It effectively discriminated between non-problematic, risky, and problematic cannabis use.
- Baseline scores predicted follow-up diagnostic status, with a cut-point of 12 identified via ROC analysis.
Conclusions:
- The CUPIT is a reliable, valid, and acceptable brief screener for problematic cannabis use.
- It is suitable for diverse community settings and age groups.
- The CUPIT has potential to support public health goals in reducing cannabis-related harms.
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