Table 3.

Comparison of patient characteristics between the PD responders and non-PD responders

	PD responders n = 30	Non-PD responders n = 29	p-value
Age, yrs	74 (67–78)	70 (62–74)	0.058
Male, n	8 (26.7)	8 (27.6)	1.00
Disease duration, months	92 (26–258)	39 (10–156)	0.071
Positive RF, n	27 (90.0)	19 (65.5)	0.030
Positive ACPA, n	28 (93.3)	24 (82.8)	0.21
SDAI	25.0 (16.6–36.5)	18.2 (12.2–24.5)	0.0081
Total GS score	19 (13–28)	8 (4–15)	0.0005
Total PD score	11 (7–20)	4 (1–7)	< 0.0001
Dkk-1, pg/ml	3040 (2489–3652)	3699 (2676–4477)	0.026
SOST, pg/ml	2428 (1721–3057)	2803 (2137–3916)	0.058
OC, pg/ml	16,588 (9582–28,327)	17,722 (12512–39,103)	0.54
OPG, pg/ml	958 (749–1190)	945 (839–1534)	0.32
OPN, pg/ml	23,035 (17382–40,435)	22,928 (17305–35,962)	0.93

ACPA Anti-cyclic citrullinated peptide antibody, OC Osteocalcin, OPG Osteoprotegrin, OPN Osteopontin, PD Power Doppler, RF Rheumatoid factor, SDAI Simplified Disease Activity Index, SOST Sclerostin