Table 1

 Baseline characteristics of the Arthritis, Rheumatism, and Aging Medical Information System patients analysed on arthritis arrays and with a multiplex cytokine assay (n = 56)*

CRP, C-reactive protein; DMARD, disease-modifying anti-rheumatic drug; RF, rheumatoid factor.
Age, median (range), years53.5 (19–78)
Female sex, n (%)43 (77)
RF seropositive, n (%)38 (68)
CRP median (range), mg/dl0.50 (0.09–15.7)
Median (range) disability score1.125 (0–2.375)
Median (range) educational level score12 (8–17)
Treatment with conventional DMARD, n (%)23 (41)
Shared epitope present, no (%)38 (68)