Sensitivity | Specificity | Accuracy | PPV | NPV | |
---|---|---|---|---|---|
Accuracy, percentage patients correctly classified as either HRV or RA+EAM; PPV, positive predictive value; NPV, negative predictive value. | |||||
*Weighted EAM score; for explanation see “Patients and methods”. | |||||
EAM | |||||
Peripheral neuropathy | 45 | 88 | 72 | 70 | 72 |
Purpura/petechiae | 45 | 94 | 75 | 82 | 73 |
Peripheral neuropathy or purpura/petechiae | 81 | 84 | 83 | 76 | 88 |
Number of EAM | |||||
⩾1 | 100 | 0 | 38 | 38 | – |
⩾2 | 77 | 46 | 58 | 47 | 77 |
⩾3 | 42 | 84 | 68 | 62 | 70 |
⩾4 | 23 | 100 | 70 | 100 | 68 |
Weighted EAM score* | |||||
⩾3 | 100 | 50 | 56 | 55 | 100 |
⩾5 | 58 | 80 | 72 | 64 | 76 |
⩾6 | 45 | 90 | 73 | 74 | 73 |
⩾9 | 19 | 100 | 69 | 100 | 67 |