Table 1 Baseline demographics, treatment and levels of serological biomarkers
Included patients n = 163 | Excluded patients n = 75 | P value | |
|---|---|---|---|
Demographic variables | |||
Female | 75.0 | 70.5 | 0.53 |
Age (years) | 53.0 (43.0 to 62.3) | 57.0 (43.5 to 64.5) | 0.23 |
Disease duration (years) | 2.4 (1.2 to 3.2) | 2.5 (1.2 to 3.1) | 0.95 |
HAQ | 0.9 (0.4 to 1.4) | 1.0 (0.4 to 1.4) | 0.60 |
Treatment | |||
DMARD use | 53.8 | 48.7 | 0.49 |
Prednisolone use | 26.3 | 29.5 | 0.64 |
Serological biomarkers | |||
ESR (mm/h) | 20.0 (10.0 to 38.0) | 24.0 (10.5 to 35.5) | 0.65 |
ESR > 20 mm/h | 48.5 | 52.0 | 0.58 |
CRP (mg/l) | 6.0 (0.0 to 15.0) | 7.0 (2.5 to 14.5) | 0.36 |
CRP > 10 mg/l | 28.8 | 26.0 | 0.66 |
IgA RF (U/ml) | 13.0 (4.0 to 41.3) | 17.5 (1.8 to 75.0) | 0.56 |
IgA RF positive | 30.2 | 33.3 | 0.87 |
IgM RF (U/ml) | 21.0 (5.0 to 105.0) | 26.5 (2.0 to 131.0) | 0.66 |
IgM RF positive | 41.7 | 66.7 | 0.40 |
Anti-CCP (U/ml) | 67.0 (4.4 to 243.0) | 56.0 (3.5 to 251.0) | 0.82 |
Anti-CCP positive | 60.4 | 66.7 | 0.76 |