Table 1. Characteristics of patients with RA.

	N = 38
Age, Mean ± SD	55.3±15.8
Female Sex, n (%)	27 (69)
Disease Duration in years, Median (IQR)	6 (2–10)
Rheumatoid Factor Positive, n (%)	28 (71.8)
Erosive Disease, n (%)	22 (56)
DAS28, Mean ± SD	4.6±1.5
ESR, mm/hour, Median (IQR)	20 (11.5–33)
CRP, g/dl, Mean ± SD	14±14.6
DMARDs (excluding anti-TNF), n (%)	18 (47)
Anti-TNFα therapy, n (%)	11 (29)
Systemic steroids, n (%)	8 (21)

Normally distributed data are represented as mean ± standard deviation, otherwise as median with inter-quartile range. Mean age of 30 healthy controls (12 males/18 females) was 51±20 years (age and sex not statistically significant compared to RA group).