Group I (RA) N=45 Group II (OA) N=15 Group III (Control) N=15 P-value Anti CCP: (u/ml) Range M ± SD (0.023-971.83) 165.01 ± 248.27 (0.01-15.7) 1.32 ± 4.01 (0.01-0.2) 0.03 ± 0.05 <0.001 I vs. II I vs. III II vs. III <0.001 <0.001 0.001 Anti MCV:(u/ml) Range M ± SD (7.24-891) 158.31 ± 232.09 (0.02-27) 6.43 ± 9.15 (0.01-18.7) 1.65 ± 4.81 <0.001 I vs. II I vs. III II vs. III <0.001 <0.001 0.01

Table 2: Comparison between anti-CCP and anti-MCV in different studied groups.