TABLE 1.
Five-fold cross-validation results, in Step 1 patient identification with 25-day drug utilization as features.
| Support Vector Machine | |||||
|---|---|---|---|---|---|
|
| |||||
| Fold 1 | Fold 2 | Fold 3 | Fold 4 | Fold 5 | |
| PPV | 1.00 | 1.00 | 0.97 | 0.97 | 0.97 |
| NPV | 0.89 | 0.99 | 0.95 | 0.98 | 0.97 |
| Sensitivity | 0.94 | 0.99 | 0.98 | 0.99 | 0.98 |
| Specificity | 0.99 | 1.00 | 0.95 | 0.95 | 0.94 |
| Logistic Regression | |||||
| PPV | 0.97 | 0.98 | 0.94 | 0.96 | 0.94 |
| NPV | 0.85 | 0.95 | 0.94 | 0.98 | 0.93 |
| Sensitivity | 0.92 | 0.98 | 0.97 | 0.99 | 0.97 |
| Specificity | 0.94 | 0.95 | 0.88 | 0.92 | 0.88 |
| Random Forest | |||||
| PPV | 1.00 | 1.00 | 0.97 | 0.98 | 0.97 |
| NPV | 0.89 | 0.97 | 0.96 | 0.98 | 0.98 |
| Sensitivity | 0.94 | 0.98 | 0.98 | 0.99 | 0.99 |
| Specificity | 1.00 | 1.00 | 0.95 | 0.96 | 0.94 |
Abbreviations: NPV, negative predictive value; PPV, positive predictive value.