Group changes in joint damage within 3 months; measured with (chronological) and without (paired) knowledge of the chronological order of the films
| Patient group | Chronological Sharp/van der Heijde change-scores | Paired Sharp/van der Heijde change-scores | ||
|---|---|---|---|---|
| Mean (SD) | Median (range; IQR) | Mean (SD) | Median (range; IQR} | |
| Early RA, disease duration <2 years; late RA; disease duration ⩾2 years. | ||||
| Early RA (n = 96) | 0.8 (1.7) | 0.0 (0 to 8; 0 – 1) | 0.5 (1.5) | 0.0 (− 4 to 6; 0– 1) |
| Late RA (n = 92) | 2.0 (3.0) | 1.0 (0 to 13; 1 – 4) | 1.0 (2.7) | 0.0 (−10 to 12; 0– 2) |