MRI JSN Score | Score Characteristics | Observed Scores, median (range) | Intraobserver Agreement | Interobserver Agreement | Agreement with X-raySvdH-total | |||
---|---|---|---|---|---|---|---|---|
No. Assessed Areas | Possible Range | RA | Controls | ICC (single measure) | ICC (average measure) | ICC (average measure) | ICC (single measure) | |
MRITotal | 21 | 0–84 | 7 (1–62) | 2.5 (0–7) | 0.90 | 0.95 | 0.92 | 0.77 |
MRIMCP2-5 | 4 | 0–16 | 1 (0–6) | 0 (0–0) | 0.79 | 0.89 | 0.86 | 0.15 |
MRIWrist | 17 | 0–68 | 5 (1–57) | 2.5 (0–7) | 0.92 | 0.96 | 0.93 | 0.84 |
MRISvdH-total | 11 | 0–40 | 2.8 (0–24) | 1 (0–2.5) | 0.87 | 0.93 | 0.90 | 0.75 |
MRISvdH-wrist | 7 | 0–24 | 2 (0–19) | 1 (0–2.5) | 0.92 | 0.96 | 0.94 | 0.68 |
MRIGenant-total | 11 | 0–28 | 1.3 (0–13.3) | 0.3 (0–0.7) | 0.82 | 0.90 | 0.89 | 0.49 |
MRIGenant-wrist | 7 | 0–12 | 0.7 (0–8.3) | 0.3 (0–0.7) | 0.89 | 0.94 | 0.95 | 0.35 |
MRIOM14 | 14 | 0–56 | 5 (1–48) | 2.5 (0–5) | 0.93 | 0.96 | 0.93 | 0.89 |
MRIOM7 | 7 | 0–28 | 1 (1–22) | 1.5 (0–2) | 0.91 | 0.95 | 0.95 | 0.79 |
SvdH: Sharp-van der Heijde; ICC: intraclass correlation coefficient. See Table 1 for description of joint spaces included in the various MRI JSN scores.