| Variables | Sensitivity | Specificity | PPV | NPV | Accuracy | P-value |
| PAMG-1 test | 96% | 100% | 100% | 95.84% | 97.78% | <0.0001 |
| B-HCG | 88% | 90% | 91.67% | 85.71% | 88.89% | <0.0001 |