Table 7 Baseline characteristics of the UA patients with erosions (≥2 erosive joints) that did and did not progress to RA within one year
From: The prognostic value of baseline erosions in undifferentiated arthritis
Characteristic | Total (n = 83) | Developed RA (n = 44) | Did not develop RA (n = 39) | P |
|---|---|---|---|---|
Female gender n (%) | 44 (53) | 26 (53.8) | 18 (46.2) | 0.2 |
Age in years (Mean ± SD) | 61.5 ± 16 | 60.7 ± 16.4 | 62.5 ± 15.6 | 0.6 |
Symptom duration at inclusion in months (Mean ± SD) | 6.5 ± 6.3 | 7.1 ± 7.4 | 5.7 ± 4.8 | 0.9 |
Morning stiffness (Mean ± SD) | 74.9 ± 100.5 | 92.2 ± 114.4 | 55.4 ± 78.9 | 0.04 |
Tender joint count (Mean ± SD) | 6.9 ± 5.8 | 9 ± 6.7 | 4.6 ± 3.7 | <0.001 |
Swollen joint count (Mean ± SD) | 4.7 ± 4 | 6 ± 4 | 3.2 ± 3.4 | <0.001 |
HAQ score (Mean ± SD) | 0.89 ± 0.74 | 0.9 ± 0.73 | 0.87 ± 0.75 | 0.9 |
ESR (mm/hr) (Mean ± SD) | 34.7 ± 24.7 | 41.3 ± 24 | 27.2 ± 23.6 | 0.004 |
CRP (mg/L) (Mean ± SD) | 27.8 ± 31.4 | 33.4 ± 30.4 | 21.5 ± 31.7 | 0.005 |
RF positivity n (%) | 31 (37.3) | 22 (50) | 9 (23.1) | 0.01 |
ACPA positivity n (%) | 25 (32.5) | 20 (51.3) | 5 (13.2) | < 0.001 |
SHS erosion score (mean ± SD) | 4.2 ± 3.4 | 4.7 ± 4.3 | 3.7 ± 1.8 | 0.4 |