Sensitivity | Specificity | NPV | NLR | |
---|---|---|---|---|
NPV=negative predictive value, NLR=negative likelihood ratio, figures given in brackets are the 95% confidence intervals. | ||||
D-Dimer alone | 96% (94–98) | 62% (57–68) | 98% (96–100) | 0.07 |
D-dimer and Wells score | 96% (94–98) | 59% (53–65) | 98% (96–99) | 0.07 |
D-Dimer and Modified Wells | 99% (97–100) | 50% (44–56) | 99% (98–100) | 0.03 |