Table 2.
Performance of Optimal CUDIT Cut Points with Different Item Selection Methods in Identifying DSM-5-M/5 Cannabis Use Disorder
| Sensitivity | Specificity | AUC | CI | |
|---|---|---|---|---|
| CUDIT full form—standard cut 13 | ||||
| Sample 1 | 54.35 | 97.09 | 0.88 | 0.83–0.92 |
| Sample 2 | 60.84 | 89.50 | 0.84 | 0.80–0.88 |
| CUDIT full form—alternative cut score | ||||
| Sample 1 (cut 10) | 80.43 | 74.76 | 0.88 | 0.83–0.92 |
| Sample 2 (cut 9) | 80.72 | 72.00 | 0.84 | 0.80–0.88 |
| Rasch regression | ||||
| Sample 1 (cut 2; items 4, 5, 6) | 73.91 | 72.82 | 0.81 | 0.75–0.87 |
| Sample 2 (cut 2; items 4, 5, 6) | 80.12 | 72.00 | 0.84 | 0.80–0.88 |
| Test characteristic curve | ||||
| Sample 1 (cut 2; items 3, 5, 6) | 78.26 | 76.70 | 0.84 | 0.78–0.89 |
| Sample 2 (cut 2; items 3, 5, 6) | 78.31 | 78.00 | 0.85 | 0.81–0.88 |
| Logistic regression/discriminant function analysis | ||||
| Sample 1 (cut 2; items 3, 6, 8) | 78.26 | 70.87 | 0.84 | 0.78–0.89 |
| Sample 2 (cut 3; items 5, 6, 8) | 81.33 | 70.00 | 0.85 | 0.81–0.89 |
a
Sample 1, n=195; Sample 2, n=366. DSM-5/5-M CUD is defined as two or more criteria.
AUC, area under the curve; CI, confidence interval; CUD, cannabis use disorder.