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Diagnostic Test Characteristics by Cut-Off (95% CI)
| D-Dimer | Sensitivity | Specificity | PPV | NPV | Area under ROC |
|---|---|---|---|---|---|
| ≥1.5 mg/dl | 96% (80-100) | 43% (10-82) | 86% (68-96) | 75% (19-99) | 0.86 (0.72-1.0) |
| ≥1.75 mg/dl | 92% (75-99) | 57% (18-90) | 89% (71-98) | 67% (22-96) | 0.86 (0.72-1.0) |
| ≥ 2 mg/dl | 77% (56-91) | 71% (29-96) | 91% (71-99) | 45% (17-77) | 0.86 (0.72-1.0) |
PPV indicates positive predictive value; NPV, negative predicitive value; ROC, receiver operating characteristic.
