Antibody status | Case/control | Genotypes | P | ||
---|---|---|---|---|---|
 |  | CC | CT | TT |  |
RF positive | Case | 0.68 (169) | 0.29 (71) | 0.03 (7) | 0.0713 |
 | Control | 0.58 (170) | 0.37 (108) | 0.04 (11) |  |
RF negative | Case | 0.71 (87) | 0.20 (24) | 0.09 (11) | 0.0002 |
 | Control | 0.57 (141) | 0.40 (98) | 0.04 (9) |  |
Anti-CCP positive | Case | 0.69 (159) | 0.28 (63) | 0.03 (7) | 0.0398 |
 | Control | 0.59 (167) | 0.38 (107) | 0.04 (11) |  |
Anti-CCP negative | Case | 0.70 (97) | 0.22 (31) | 0.08 (11) | 0.0032 |
 | Control | 0.59 (167) | 0.38 (107) | 0.04 (11) |  |