Intrareader and interreader agreement on RAMRIS score and tenosynovitis for status and change (2–way random effect model). Values are mean with 95% CI.
| MRI Variables | ICC | Measure | Baseline | 1 Year | Change |
|---|---|---|---|---|---|
| RAMRIS synovitis | ICC intrareader | Reader 1 | |||
| SmICC | 0.96 (0.87–0.99) | 0.91 (0.60–0.98) | 0.76 (0.61–0.97) | ||
| AvmICC | 0.98 (0.93–0.99) | 0.95 (0.75–0.99) | 0.79 (0.63–0.99) | ||
| Reader 2 | |||||
| SmICC | 0.99 (0.96–0.99) | 0.96 (0.81–0.99) | 0.85 (0.77–0.99) | ||
| AvmICC | 0.99 (0.98–0.99) | 0.98 (0.89–0.99) | 0.90 (0.84–0.99) | ||
| ICC interreader | SmICC | 0.96 (0.86–0.98) | 0.94 (0.75–0.98) | 0.90 (0.65–0.96) | |
| AvmICC | 0.98 (0.92–0.99) | 0.97 (0.85–0.99) | 0.87 (0.68–0.95) | ||
| RAMRIS BME | ICC intrareader | Reader 1 | |||
| SmICC | 0.98 (0.92–0.99) | 0.72 (0.60–0.94) | 0.71 (0.42–0.98) | ||
| AvmICC | 0.99 (0.96–0.99) | 0.84 (0.63–0.97) | 0.75 (0.46–0.99) | ||
| Reader 2 | |||||
| SmICC | 0.99 (0.97–0.99) | 0.80 (0.27–0.96) | 0.78 (0.46–0.95) | ||
| AvmICC | 0.99 (0.98–0.99) | 0.88 (0.43–0.98) | 0.87 (0.51–0.97) | ||
| ICC interreader | SmICC | 0.98 (0.95–0.99) | 0.99 (0.96–0.99) | 0.83 (0.61–0.96) | |
| AvmICC | 0.99 (0.97–0.99) | 0.99 (0.98–0.99) | 0.86 (0.69–0.99) | ||
| RAMRIS erosion | ICC intrareader | Reader 1 | |||
| SmICC | 0.99 (0.96–0.99) | 0.76 (0.32–0.95) | 0.72 (0.52–0.96) | ||
| AvmICC | 0.99 (0.98–0.99) | 0.86 (0.42–0.97) | 0.83 (0.61–0.98) | ||
| Reader 2 | |||||
| SmICC | 0.98 (0.94–0.99) | 0.89 (0.54–0.98) | 0.76 (0.60–0.91) | ||
| AvmICC | 0.99 (0.97–0.99) | 0.94 (0.70–0.99) | 0.82 (0.71–0.98) | ||
| ICC interreader | SmICC | 0.96 (0.86–0.98) | 0.93 (0.69–0.98) | 0.69 (0.40–0.86) | |
| AvmICC | 0.98 (0.92–0.99) | 0.96 (0.82–0.99) | 0.71 (0.46–0.92) | ||
| Total RAMRIS | ICC intrareader | Reader 1 | |||
| SmICC | 0.99 (0.96–0.99) | 0.88 (0.50–0.97) | 0.74 (0.32–0.91) | ||
| AvmICC | 0.99 (0.98–0.99) | 0.93 (0.67–0.98) | 0.76 (0.38–0.93) | ||
| Reader 2 | |||||
| SmICC | 0.97 (0.91–0.99) | 0.96 (0.83–0.99) | 0.68 (0.40–0.96) | ||
| AvmICC | 0.98 (0.95–0.99) | 0.98 (0.90–0.99) | 0.70 (0.52–0.99) | ||
| ICC interreader | SmICC | 0.95 (0.84–0.98) | 0.98 (0.92–0.99) | 0.91 (0.77–0.96) | |
| AvmICC | 0.97 (0.91–0.99) | 0.99 (0.96–0.99) | 0.94 (0.81–0.98) | ||
| Tenosynovitis | ICC intrareader | Reader 1 | |||
| SmICC | 0.98 (0.96–0.99) | 0.96 (0.81–0.99) | 0.87 (0.60–0.98) | ||
| AvmICC | 0.99 (0.98–0.99) | 0.98 (0.89–0.99) | 0.91 (0.62–0.99) | ||
| Reader 2 | |||||
| SmICC | 0.98 (0.95–0.99) | 0.97 (0.86–0.99) | 0.84 (0.56–0.91) | ||
| AvmICC | 0.99 (0.97–0.99) | 0.98 (0.92–0.99) | 0.88 (0.60–0.96) | ||
| ICC interreader | SmICC | 0.98 (0.94–0.98) | 0.99 (0.94–0.99) | 0.92 (0.74–0.98) | |
| AvmICC | 0.99 (0.97–0.99) | 0.99 (0.97–0.99) | 0.94 (0.82–0.99) |
SmICC: single-measure intraclass correlation coefficients; AvmICC: average measure intraclass correlation coefficients; MRI: magnetic resonance imaging; RAMRIS: Rheumatoid Arthritis MRI Score; BME: bone marrow edema.