Table 2

 Cross tabulation of IgG anti-CCP antibody occurrence and agglutinating RF results in recent onset RA

Anti-CCP+Anti-CCP−Total
Results are shown as No (%).
RF+121 (50)34 (14)155 (64)
RF−35 (14)52 (21)87 (36)
Total156 (64)86 (36)242 (100)