TABLE 1.

Clinical characteristics of the study population.

	RA (n = 108)	HC (n = 99)
Age, years, mean (median)	52.56 (53)	50.44 (50)
Female	67.6%	68.7%
Disease activity parameters
ESR, mm/h, mean (median)	56.55 (43), 3–124
CRP, mg/l, mean (median)	33.01 (13.75), 0–325
TJC-28, mean (median)	10.09 (6.5), 0–28
SJC-28, mean (median)	0.19 (0), 0–2
DAS28, mean (median)	4.51 (4.45), 1.9–7.1
Lymphocyte subpopulations
Th1, mean (median)	162.51 (131.38), 11.25–549.26
Th2, mean (median)	7.14 (6.23), 3.12–19.06
Th17, mean (median)	8.84 (6.76), 1.69–19.22
Tregs, mean (median)	31.58 (28.19), 7.93–87.75
Cytokines
IL-2, mean (median)	4.67 (3.03), 0–30.55
IL-4, mean (median)	5.53 (2.805), 0–82.48
IL-6, mean (median)	28.00 (15.77), 0–93.63
IL-10, mean (median)	7.01 (5.62), 0–30.2
IL-17, mean (median)	18.20 (9.575), 0–57.16
TNF-α, mean (median)	6.60 (5.62), 0–27.02
INF-γ, mean (median)	10.39 (5.535), 0–77.83