Table 1.
Comparison of demographic and serologic features between RA patients with and without RN
| Characteristics | With RN (n = 22) |
Without RN (n = 930) |
p value |
|---|---|---|---|
| Females | 14 (63.6) | 660 (71) | 0.452 |
| Males | 8 (36.4) | 270 (29) | |
| Age, years | 54± 12 | 49.8 ± 12 | 0.551 |
| Disease duration, years | 6.3± 7.8 | 6 ± 6.4 | 0.600 |
| F/H | 7 (31.8) | 157 (16.9) | 0.289 |
| Smoking | 3 (l3.6) | 99 (10.6) | 0.673 |
| Obesity | 11 (50) | 326 (35.1) | 0.016* |
| RF positivity | 17 (77.3) | 699 (75.2) | 0.952 |
| ACPA positivity | 11 (50) | 542 (58.3) | 0.482 |
| ANA positivity | 4 (18.2) | 227 (24.4) | 0.605 |
Values are presented as numbers (%) or means ± SD unless otherwise stated. RN, rheumatoid nodules; F/H, family history of autoimmune rheumatic disease; RF, rheumatoid factor; ACPA, anti-cyclic citrullinated peptide antibodies; ANA, anti-nuclear antibodies.
*
Statistically significant.