Table 1 Characteristics of the 228 rheumatoid arthritis patients
Total | IgA anti-CCP-positive, IgG anti-CCP-positive | IgA anti-CCP-negative, IgG anti-CCP-positive | |
|---|---|---|---|
Number of patients | 228 | 66 | 72 |
Mean age (years) | 55 | 57 | 52 |
Number of women:men | 158:70 | 48:18 | 46:26 |
Mean age (years) | 54:59 | 55:62 | 51:53 |
Number of agglutinating rheumatoid factor-positive | 142 | 56 | 68 |
(%) | 63 | 85 | 84 |
IgM-rheumatoid factor-positive (%) | 74 | 98 | 96 |
Median level (U/ml) | 114 | 247 | 184 |
IgA-rheumatoid factor-positive (%) | 73 | 97 | 87 |
Median level (U/ml) | 45 | 83 | 58 |
IgG anti-CCP-positive (%) | 64 | 100 | 100 |
Median level among positive cases (U/ml) | 520 | 1017 | 222 |