Table 3.
Results of the FANA and sp‐ANAs Tests According to Clinical Diagnoses
| Diagnosis (no. of patients) | Results of the FANA and sp‐ANAs tests | Agreementa | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N/N | N/P | P/N | P/P | % | k value | |||||
| SLE (n = 154) | 9 | (5.8)† | 2 | (1.3) | 28 | (18.2) | 115 | (74.7) | 80.5 | 0.298 |
| Sjogren (n = 87) | 20 | (23.0) | 7 | (8.0) | 9 | (10.3) | 51 | (58.6) | 81.6 | 0.579 |
| SS (n = 25) | 6 | (24.0) | 0 | (0.0) | 5 | (20.0) | 14 | (56.0) | 80.0 | 0.573 |
| MCTD (n = 101) | 26 | (25.7) | 7 | (6.9) | 25 | (24.8) | 43 | (42.6) | 68.3 | 0.369 |
| Overlap syndrome (n = 136) | 22 | (16.2) | 8 | (5.9) | 15 | (11.0) | 91 | (66.9) | 83.1 | 0.570 |
| PM/DM (n = 12) | 1 | (8.3) | 1 | (8.3) | 7 | (58.3) | 3 | (25.0) | 33.3 | ‐0.090 |
| RA (n = 51) | 13 | (25.5) | 5 | (9.8) | 17 | (33.3) | 16 | (31.4) | 56.9 | 0.180 |
| Vasculitis (n = 24) | 15 | (62.5) | 0 | (0.0) | 6 | (25.0) | 3 | (12.5) | 75.0 | 0.385 |
| Non‐SRD (n = 358) | 170 | (47.5) | 18 | (5.0) | 132 | (36.9) | 38 | (10.6) | 58.1 | 0.132 |
| Total (n = 948) | 282 | (29.7) | 48 | (5.1) | 244 | (25.7) | 374 | (39.5) | 69.2 | 0.404 |
a
Agreement between results of the FANA and sp‐ANAs test, †number of patients (%). N, negative; P, positive.