Table 1 Baseline characteristics by ACPA status

Female (number; %)

208 (67%)

89 (74%)

P = 0.193²

RF positive (number; %)

244 (79%)

47 (39%)

P <0.001²

Age (years)

54.0 (46.0, 64.0)

55.0 (47.0, 62.0)

P = 0.661¹

Disease duration (months)

2.00 (0.00, 5.00)

1.00 (0.00, 4.00)

P = 0.106³

Larsen score

7.50 (2.50, 21.25)*

4.50 (1.00, 9.50)

P <0.001³

DAS28

5.72 (4.91, 6.73)

5.96 (4.92, 6.85)

P = 0.305¹

HAQ

1.62 (1.00, 2.12)

1.62 (1.12, 2.12)

P = 0.595³

EuroQol

0.60 (0.15, 0.68)

0.58 (0.08, 0.68)

P = 0.552³

SF-36 PCS

28.68 (23.24, 35.95)

28.70 (22.90, 35.56)

P = 0.713³

SF-36 MCS

38.64 (27.65, 53.71)

35.87 (25.37, 52.95)

P = 0.217³