Age, years (mean ± SD)
|
41.0 ± 5.7
|
61.3 ± 14.3
|
43.1 ± 16.4
|
0.001
|
0.765
|
0.035
|
Disease duration, years (mean ± SD)
|
13.7 ± 6.6
|
21.7 ± 10.7
|
10.8 ± 4.1
|
0.035
|
0.298
|
0.003
|
Rheumatoid factor
|
7 (77.8 %)
|
2 (20.0 %)
|
2 (28.5 %)
|
-
|
-
|
-
|
Anti-CCP
|
6 (66.7 %)
|
0 (0)
|
1 (14.2 %)
|
-
|
-
|
-
|
US erosion number (median (25th to 75th percentile))
|
3.0 (1.7–4.2)
|
0.5 (0–2.0)
|
0 (0–1.0)
|
0.019
|
0.004
|
0.569
|
US quadrants with erosion
|
27 (10.7 %)
|
12 (4.3 %)
|
4 (2.0 %)
|
-
|
-
|
-
|
ScUSSe total (median (25th to 75th percentile))
|
4.0 (2.5–6.0)
|
1.0 (0–3.0)
|
0 (0–1.0)
|
0.021
|
0.003
|
0.535
|
Grade 1 (<2 mm)
|
16a
|
10a
|
4a
|
-
|
-
|
-
|
Grade 2 (2–3 mm)
|
9a
|
1a
|
0a
|
-
|
-
|
-
|
Grade 3 (>3 mm)
|
2a
|
1a
|
0a
|
-
|
-
|
-
|
CT erosion number (mean ± SD)
|
14.0 ± 9.7
|
5.7 ± 5.1
|
4.7 ± 4.5
|
0.050
|
0.030
|
0.543
|
RAMRIS (mean ± SD)
|
21.6 ± 18.2
|
7.4 ± 7.0
|
5.1 ± 5.0
|
0.053
|
0.029
|
0.448
|
RAMRIS MCP (median (25th to 75th percentile))
|
6.0 (4.5–10.2)
|
1.0 (0–2.0)
|
0 (0–1.5)
|
0.013
|
0.009
|
0.353
|
RAMRIS wrist (median (25th to 75th percentile))
|
8.0 (10.2–16.2)
|
3.5 (0–11.0)
|
3.0 (0.5–6.7)
|
0.111
|
0.057
|
0.694
|
Grade 1 (1–10 %)
|
24a
|
21a
|
6a
|
-
|
-
|
-
|
Grade 2 (11–20 %)
|
19a
|
6a
|
6a
|
-
|
-
|
-
|
Grade 3 − 10 (21–100 %)
|
7a
|
1a
|
2a
|
-
|
-
|
-
|