Table 1 Baseline characteristics of patients and healthy controls
Characteristics | RA (n = 178) | axSpA (n = 126) | HC (n = 119) |
|---|---|---|---|
Age, years, mean ± SD | 55.0 ± 12.4 | 44.3 ± 8.4 | 55.2 ± 13.5 |
Female sex, n (%) | 148 (78.3) | 82 (65.1) | 93 (78.2) |
Disease duration, years, median (IQR) | 5.4 (1.4–11.2) | 4.5 (2.1–5.5) | NA |
G0/G1 ratio, median (IQR) | 1.25 (1.09–1.56) | 0.89 (0.79–1.09) | 0.95 (0.77–1.13) |
CRP, mg/L, mean ± SD | 19.4 ± 30.6a | 5.8 ± 10.3 | NA |
DAS28, mean ± SD | 5.1 ± 1.4a | NA | NA |
ACPA-positive, n (%) | 96 (53.9) | NA | NA |
RF-positive, n (%) | 136 (76.4) | NA | NA |
HLA-DRB1 SE-positive, n (%) | 96 (53.9) | NA | NA |
HLA-B27-positive, n (%) | NA | 88 (69.8) | NA |
Previous/ongoing RA therapy, n (%) | 127 (71%) | NA | NA |