Intra-reader and inter-reader reliability for B-mode (BM) synovitis scoring on still images in juvenile idiopathic arthritis (JIA)
| Intra-reader reliability | Inter-reader reliability | ||||
| Regions | No. images | smICC Mean (SD) | Cohen’s weighted kappa Mean (SD) | avmICC (95% CI) | Light’s weighted kappa Mean (SD) |
| Anterior elbow | 25 | 0.90 (0.03) | 0.81 (0.06) | 0.96 (0.92 to 0.98) | 0.72 (0.09) |
| Posterior elbow | 27 | 0.93 (0.04) | 0.88 (0.06) | 0.96 (0.93 to 0.98) | 0.76 (0.05) |
| Radiocarpal | 28 | 0.79 (0.10) | 0.67 (0.12) | 0.93 (0.87 to 0.96) | 0.61 (0.10) |
| Midcarpal | 28 | 0.89 (0.05) | 0.79 (0.08) | 0.96 (0.93 to 0.98) | 0.73 (0.11) |
| MCP2–3, dorsal | 20 | 0.75 (0.07) | 0.63 (0.07) | 0.89 (0.79 to 0.95) | 0.50 (0.10) |
| PIP2–3, dorsal | 20 | 0.87 (0.05) | 0.77 (0.07) | 0.94 (0.88 to 0.98) | 0.64 (0.11) |
| PIP2–3, volar | 30 | 0.85 (0.07) | 0.72 (0.10) | 0.95 (0.92 to 0.98) | 0.72 (0.10) |
| Hip | 26 | 0.92 (0.05) | 0.84 (0.08) | 0.96 (0.93 to 0.98) | 0.75 (0.08) |
| Knee, suprapatellar recess | 24 | 0.95 (0.01) | 0.91 (0.02) | 0.98 (0.96 to 0.99) | 0.86 (0.05) |
| Knee, lateral parapatellar recess | 27 | 0.88 (0.09) | 0.81 (0.13) | 0.95 (0.91 to 0.98) | 0.70 (0.04) |
| Tibiotalar | 26 | 0.94 (0.04) | 0.90 (0.07) | 0.98 (0.96 to 0.99) | 0.83 (0.05) |
| Talonavicular | 22 | 0.87 (0.12) | 0.83 (0.13) | 0.95 (0.90 to 0.98) | 0.69 (0.09) |
| Anterior subtalar | 27 | 0.95 (0.04) | 0.91 (0.07) | 0.99 (0.97 to 0.99) | 0.91 (0.04) |
| Posterior subtalar | 20 | 0.86 (0.09) | 0.74 (0.08) | 0.95 (0.90 to 0.98) | 0.75 (0.10) |
| MTP2–3, dorsal | 20 | 0.94 (0.04) | 0.89 (0.08) | 0.96 (0.93 to 0.99) | 0.79 (0.11) |
avmICC, average measure ICC; ; ICC, intraclass correlation coefficient; MCP, metacarpophalangeal; MTP, metatarsophalangeal; PIP, proximal interphalangeal; smICC, single measure ICC.