Baseline characteristics of all 279 included patients
| Total number of patients | 279 |
|---|---|
| Age mean (±SD), years | 60.2±12.1 |
| Disease duration mean (±SD), years | 12.7±9.1 |
| RF positive n (%) | 167 (59.9%) |
| anti-CCP Ab. positive n (%) | 194 (69.5%) |
| Mean (±SD) baseline CRP, mg/dL (upper normal limit: <0.5) | 0.85±1.43 |
| Mean (±SD) baseline HAQ | 0.79±0.75 |
| Mean (±SD) baseline CDAI | 9.0±9.6 |
| Mean (±SD) baseline SDAI | 9.8±9.5 |
| Mean (±SD) SHS | 48.4±63.3 |
anti-CCP Ab, anticitrullinated peptide antibodies; CDAI, clinical disease activity index; CRP, C reactive protein; HAQ, Health Assessment Questionnaire; RF, rheumatoid factor; SDAI, simplified disease activity index; SHS, van der Heijde-Sharp-Score.