Table 1 HEp-2-IIF titers in 10,869 positive samples, according to referral specialty (rheumatology versus other specialties)
Titer | Rheumatology | Other specialties | p value (Chi-square test) | ||
|---|---|---|---|---|---|
n = 1580 (%) | Reactivity grade (%) | n = 9289 (%) | Reactivity grade (%) | ||
1/80 | 131 (8.3) | Low 676 (42.8) | 1215 (13.1) | Low 5094 (54.8) | p < 0.0001 |
1/160 | 545 (34.5) | 3879 (41.8) | |||
1/320 | 483 (30.6) | Moderate 734 (46.4) | 2780 (29.9) | Moderate 3778 (40.7) | p < 0.0001 |
1/640 | 251 (15.9) | 998 (10.7) | |||
1/1280 | 155 (9.8) | High 170 (10.8) | 394 (4.2) | High 417 (4.5) | p < 0.0001 |
≥ 1/2560 | 15 (0.9) | 23 (0.2) | |||