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Table 1 Patient characteristics

From: Outcomes and potential mechanism of a protocol to optimize foot orthoses in patients with rheumatoid arthritis

 Total group (n = 38)Subgroup (n = 23)
Age, years52.5 (13.9)53.9 (12.1)
Female, n (%)28 (73.7)18 (78.3)
Body-mass index, kg/m226.7 (8.8)26.3 (4.9)
Disease duration*, years5.5 (1.0;8.5)6.0 (2.0;10.0)
DAS-44*1.7 (0.9;2.3)1.4 (1.0;2.0)
 remission (< 1.6), n (%)22 (57.9)14 (60.9)
 low disease activity (1.6–2.3), n (%)9 (23.7)6 (26.1)
 moderate disease activity (2.4–3.6), n (%)5 (13.2)2 (8.7)
 high disease activity (≥ 3.7), n (%)2 (5.3)1 (4.3)
Location of foot pain, n (%)
 rearfoot2 (5.3)
 forefoot29 (76.3)23 (95.8)
 hallux2 (5.3)
 combination5 (13.2)1 (4.2)
Uni−/ bilateral foot pain, n (%)
 unilateral5 (13.2)2 (8.7)
 bilateral33 (86.8)21 (91.3)
Sharp / van der Heijde score feet*
 total score (range 0–168)1.0 (0.0;13.8)1.0 (0.0;28.0)
 foot joint erosion (range 0–120)0.0 (0.0;1.0)0.0 (0.0;11.0)
 joint space narrowing (range 0–48)0.0 (1.0;0.3)0.00 (0.0;4.0)
Platto-score*
 total score (range 0–19)2.0 (1.0;4.0)1.8 (1.0;4.4)
 forefoot deformity (range 0–12)1.0 (0.0;3.0)0.8 (0.0;3.0)
 rearfoot deformity (range 0–7)1.0 (1.0;1.5)1.0 (1.0;1.5)
FOs wearing time a day, n (%)
  < 1 h1 (2.9)0 (0)
 1–4 h8 (22.9)4 (16.7)
 4–8 h13 (37.1)10 (41.7)
 8–12 ours8 (22.9)2 (8.3)
  > 12 h5 (14.3)3 (12.5)
  1. Values are presented as mean ± SD unless otherwise indicated. * Values are presented as median (IQR). DAS-44 = disease activity score including 44 joints