Table 1 Clinical features of the patients with rheumatoid arthritis a
Clinical characteristics | RA patients |
|---|---|
Women (%) | 75.7 |
Median age at disease onset (IQR)b | 47 (37 to 57) |
Morning stiffness (%) | 96.2 |
Arthritis in three or more joint areas (%) | 99.7 |
Arthritis of hand joints (%) | 99.3 |
Symmetric arthritis (%) | 99.1 |
Rheumatoid nodules (%)b | 20.3 |
Rheumatoid factor (%) | 71.2 |
Erosions (%) | 68.6 |
Sicca syndrome (%) | 8.9 |
Interstitial pneumonitis (%) | 2.7 |
Shared epitope (carrier %)b | 55.0 |
Anti-CCP (%)b | 67.3 |