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Receiver Operating Characteristic (ROC) Curve Results
| Youden Index | Sensitivity | Specificity | PPV | NPV | |
|---|---|---|---|---|---|
| MA (mm) | <47 | 90% | 72% | 64% | 93% |
| INR | >1.5 | 90% | 61% | 57% | 92% |
| Plt Count | <96 | 100% | 56% | 56% | 100% |
| Angle (degrees) | <41 | 81% | 59% | 72% | 70% |
INR = international normalized ratio of prothrombin time; Platelet count = 1,000 per microliter of blood; MA= maximum amplitude
