Intrareader ICC and SDC for MRI, ultrasonography and CT
| Intrareader ICC for status scores | SDC (SDC%) | ||||
|---|---|---|---|---|---|
| 0 Months | 6 Months | 12 Months | 0–6 Months | 0–12 Months | |
| MRI erosion score | 0.93 | 0.97 | 0.98 | 3.0 (6.4) | 2.5 (5.1) |
| MRI synovitis score | 0.87 | 0.64 | 0.49 | 2.3 (11.6) | 2.5 (12.6) |
| MRI bone oedema score | 0.44 | 0.95 | 0.91 | 2.4 (7.9) | 2.6 (7.8) |
| MRI erosion volume | 0.98 | 0.99 | 0.99 | 24 mm3(2.8) | 32 mm3(3.0) |
| Ultrasonography erosion score | 0.92 | 0.95 | 0.95 | 1.8 (5.1) | 2.1 (6.0) |
| Ultrasonography grey-scale synovitis score | 0.91 | 0.89 | 0.96 | 2.4 (6.7) | 2.6 (7.2) |
| Ultrasonography power Doppler score | 0.94 | 0.99 | 0.97 | 1.2 (6.0) | 1.0 (4.9) |
| CT erosion score | 0.97 | 0.96 | 0.96 | 0.3 (0.5) | 0.7 (1.2) |
| CT erosion volume | 0.99 | 0.99 | 0.99 | 19 (1.6) | 17 (1.5) |
ICC, intraclass correlation coefficient; SDC, smallest detectable change; SDC%, SDC as a percentage of actually obtained maximum score.