Table 3 Diagnostic performance of a combination of CRP (mg/L) and Platelet (109/L) tests for GCA
From: The utility of ESR, CRP and platelets in the diagnosis of GCA
Diagnostic Performance | Test Criteria | |
|---|---|---|
CRP > = 20 or Platelets > = 300 | CRP > = 20 and Platelets > = 300 | |
Sensitivity% | 87.1 (80.3, 92.1) | 51.1 (42.5, 59.6) |
Specificity% | 46.6 (37.8, 55.5) | 84.0 (76.5, 89.8) |
PPV% | 63.4 (56.1, 70.2) | 77.2 (67.2, 85.3) |
NPV% | 77.2 (66.4, 85.9) | 61.8 (54.2, 69.0) |
% Correct | 67.4 | 67.4 |