Table 2 Synovitis score

Synovitis score^a, median (IQR)

5 (3–6)

6 (5–7)

3 (1.5–5)

0.002

 Lining layer hypertrophy

1.5 (1–2)

2 (1–3)

1 (0–1.5)

0.025

 Inflammatory infiltrate

1.5 (1–3)

3 (1–3)

1 (0.5–1.5)

0.007

 Cellular density

2 (1–2)

2 (2–2)

1 (0.5–1.5)

0.002