Table 1.

Characteristics of patients and healthy subjects

	RA subgroup 1	RA subgroup 2	HS
Number of subjects	74	14	63
Sex, female, n (%)	65 (88%)	12 (85%)	52 (82%)
Age, years, median (range)	54.7 (16–76)	49.3 (34–63)	51.2 (23–74)
DAS28, median (range)	5.5 (3.5–7.02)	3.2 (2.7–3.5)	–
Number of subjects with classes I–II DAS28/class III DAS28	28/46	14/0	–
Number of subjects with recent-onset/established/end-stage RA	5/44/25	0/14/0	–

DAS28 28-joint Disease Activity Score, RA Rheumatoid arthritis, HS Healthy subjects

See Methods for descriptions of RA subgroups 1 and 2