Table 3. Characteristics of RA patients and controls.

	Patients (n = 43)	Controls (n = 40)
Age (mean ± SD)	49.2 ± 19.0	47.8 ± 17.2
Sex (Women/Man)	30/13	25/15
Disease course (year)	2.5 ± 1.1	-
Score of disease activity in 28 joints	3.8 ± 1.0	-
ESR (mm/h)	57.1 ± 13.7	11.2 ± 4.1
CRP (mg/L)	34.1 ± 5.2	5.1 ± 1.2
RF (IU/ml)	116.1 ± 23.4	9.7 ±1.0
Anti-CCP (U/ml)	71.5± 19.4	30.9 ± 14.2