Prevalence of observed lesions, observed agreement and intraobserver and interobserver reliabilities when scoring synovitis in non-MCP joints on static images and in patients
| Component | Static images | Patients | ||||||||
| Intra | Inter | Intra | Inter | |||||||
| Kappa range (min–max) (95% CI*) | Observed agreement (min–max) | Mean kappa (95% CI) | Observed agreement Mean | Prevalence % (mean) | Kappa range (min–max) (95% CI) | Observed agreement (min–max) | Mean kappa (95% CI) | Observed agreement Mean | Prevalence %(mean) | |
| SH score (0–3) | 0.73–0.9 (0.75–0.91 to 0.72–0.94) | 0.6–0.95 | 0.6 (0.35 to 0.59) | 0.57 | Grade 0 : 18% Grade 1 : 23.9% Grade 2 : 31.6% Grade 3 : 26.6% | 0.4–0.82 (0.16–0.38 to 0.60–0.83) | 0.54–0.88 | 0.51 (0.24 to 0.38) | 0.59 | Grade 0 : 60.4 Grade 1 : 20.8 Grade 2 : 14.7 Grade 3: 4.1 |
| SH detection (yes/no) | 0.64–0.84 (0.63–0.88 to 0.73–0.86) | 0.68 (0.54 to 0.78) | 0.47–0.84 (0.36–0.63 to 0.77–1) | 0.43 (0.36 to 0.49) | ||||||
| PD score (0–3) | 0.9–1 (0.94–0.99 to 1–1) | 0.88–1 | 0.86 (0.72 to 0.86) | 0.84 | Grade 0 : 24.1% Grade 1 : 27.4% Grade 2 : 29.2% Grade 3 : 25.4% | 0.48–0.88 (0.42–0.71 to 0.83–0.98) | 0.76–0.94 | 0.61 (0.42 to 0.61) | 0.79 | Grade 0 : 80.4 Grade 1 : 10.2% Grade 2 : 8.2 Grade 3 : 1.2 |
| PD detection (yes/no) | 0.9–1 (0.94–0.99 to 1–1) | 0.88 (0.80 to 0.95) | 0.47–0.9 (0.3–0.61 to 0.77–1) | 0.53 (0.43 to 0.60) | ||||||
| Combined score* (0–3) | 0.75–1 (0.73–1 to 0.96–1) | 0.69–1 | 0.65 (0.41 to 0.65) | 0.63 | Grade 0 : 14.9% Grade 1 : 14.9% Grade 2 : 34.2% Grade 3: 28% | 0.42–0.81 (0.44–0.66 to 0.72–0.94) | 0.54–0.88 | 0.52 (0.36 to 0.52 | 0.60 | Grade 0 : 61.4 Grade 1 : 19.1 Grade 2 : 15.2 Grade 3: 4.3 |
| Combined score* (SH+PD) (yes/no) | 0.75–0.82 (0.71–0.87 to 0.72–0.84) | 0.6 (0.5 to 0.58) | 0.45–0.84 (0.32–0.58 to 0.72–0.94) | 0.51 (0.36 to 0.54) | ||||||
*EULAR-OMERACT combined score.
PD, power Doppler signal; SH, synovial hypertrophy.