Additional file 3 of Presence of autoantibodies in 'seronegative' rheumatoid arthritis associates with classical risk factors and high disease activity

Additional file 3: Supplementary Table 3. Baseline characteristics in CCP2-positive and -negative RA. The table show baseline characteristics for the EIRA patients included in the study, based on anti-CCP2 IgG status; p-values indicate differences between subsets with respect to: age, female-to-male ratio, number of smokers, HLA-DRB1 SE-positivity, PTPN22-positivity, DAS28 and CRP.