Sensitivity, Specificity, and ROC curve analyses for Rx-CAGE and POMI-e
| Measure | Cut off score (equal or higher than) | Sensitivity* (%) | Specificity* (%) | AUC | 95% CI | P value |
|---|---|---|---|---|---|---|
| Rx-CAGE | 1 | 62.8 | 64.3 | 0.54 | 0.52–0.57 | .001 |
| 2 | 35.6 | 86.4 | 0.56 | 0.53–0.60 | <.001 | |
| POMI-e | 1 | 82.8 | 67.7 | 0.58 | 0.55–0.60 | <.001 |
| 2 | 69.4 | 85.6 | 0.63 | 0.60–0.66 | <.001 |
ROC, receiver operating characteristic; CI, confidential interval; AUC, area under the curve; RxCAGE, Cut down, Annoyed, Guilty, and Eye-opener questionnaire modified to focus on prescription medications; POMI-e, Prescription Opioid Misuse Index expanded to include all prescription medications.
↵* Having 1 or more positive Health Cheq Rx misuse items was used as the comparison.