Sensitivity, specificity, negative, and positive predictive values (NPV, PPV) and likelihood ratios (LR) for SimpliRED d-dimer testing as performed by all grades of emergency department medical staff on adult patients presenting with suspected DVT having been assessed using the clinical prediction model
| Parameter | Point estimate | 95% CI |
|---|---|---|
| Sensitivity (%) | 63.4 | 48.1 to 76.4 |
| Specificity (%) | 74.8 | 68.9 to 79.9 |
| PPV (%) | 30.2 | 21.5 to 40.6 |
| NPV (%) | 92.2 | 87.6 to 95.2 |
| LR of (+) test | 2.52 | 1.83 to 3.46 |
| LR of (−) test | 0.49 | 0.32 to 0.74 |