Table 1.
Subject characteristics
| Cases (n = 515) | Controls (n = 672) | |
|---|---|---|
| Sex | ||
| Male n (%) | 131 (25.4%) | 200 (29.8%) |
| Female n (%) | 384 (74.6%) | 472 (70.2%) |
| Anti-CCP (units/mL) Mean (SD) | 194.9 (234.9) | N/A |
| RFUW (IU/mL) Mean (SD) | 271.1 (471.7) | N/A |
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