Table 3.

Correlation coefficients between ESR and CRP with RF antibodies and ACPA in RA patients

Parameter	RF-IgA	RF-IgM	Anti-CCP	Anti-MCV
ESR	−0.006	0.282	0.094	0.879*
CRP	−0.097	0.497	0.073	0.994*

* Pearson’s correlation coefficient (r) at 95 % confidence was significant at 0.01 levels (two-tailed)