Table 1

Demographic data of the presymptomatic individuals, rheumatoid arthritis patients and controls included in the study
Presymptomatic individuals (n = 47) RA patients (n = 36) Controls (n = 155)
Females (%) 70.2 69.4 71.6
Median (interquartile range) age (years) 50.3 (18.7) 57.1 (7.6) 50.2 (17.1)
HLA-DR SEa, n (%) 28/47 (59.6) 24/34 (70.6) 43/105 (41.0)
Anti-CCP2 antibody-positive, n (%) 12/47 (25.5) 21/35 (60.0) 1/155 (0.6)

Anti-CCP, anti-cyclic citrullinated peptide antibodies; RA, rheumatoid arthritis. aShared epitope defined as human leukocyte antigen-DRB1 0101/0401/0404/0405/0408.

Bokarewa et al.

Bokarewa et al. Arthritis Research & Therapy 2014 16:R45   doi:10.1186/ar4474

Open Data