Table 2 Test performance characteristics of SE, anti-CCP and RF for RA association
From: The phenotype and genotype of rheumatoid arthritis in the Democratic Republic of Congo
Parameter | Patients % (n) | Controls % (n) | PPV | NPV | Specificity | sensitivity | OR | 95% CI | P-value | |
|---|---|---|---|---|---|---|---|---|---|---|
SE | positive | 35.1 (13) | 12.5 (3) | 81 | 47 | 87 | 35 | 3.8 | 0.9 to 15.1 | 0.07 |
| Â | negative | 64.9 (24) | 87.5 (21) | Â | Â | Â | Â | Â | Â | Â |
RF | positive | 34.7 (25) | 3.0 (2) | 93 | 58 | 97 | 35 | 17.3 | 3.9 to 76.6 | <0.0001 |
| Â | negative | 65.2 (47) | 97.0 (65) | Â | Â | Â | Â | Â | Â | Â |
anti-CCP | positive | 47.2 (34) | 3.0 (2) | 94 | 63 | 97 | 47 | 29.1 | 6.6 to 127.9 | <0.0001 |
| Â | negative | 52.7 (38) | 97.0 (65) | Â | Â | Â | Â | Â | Â | Â |