From: The phenotype and genotype of rheumatoid arthritis in the Democratic Republic of Congo
 |  | RA patient group | OR | 95% CI | P-value | |
---|---|---|---|---|---|---|
 |  | SE positive | SE negative |  |  |  |
anti-CCP | positive | 7 | 1 | 1.6 | 0.35 to 7.11 | 0.712 |
 | negative | 4 | 10 |  |  |  |
RF | positive | 4 | 9 | 0.76 | 0.17 to 3.4 | 1.0 |
 | negative | 7 | 12 |  |  |  |