Table 5

Prevalence of observed lesions, observed agreement and intraobserver and interobserver reliabilities when scoring synovitis in non-MCP joints on static images and in patients

ComponentStatic imagesPatients
IntraInterIntraInter
Kappa range (min–max) (95% CI*)Observed agreement
(min–max)
Mean kappa (95% CI)Observed agreement MeanPrevalence %
(mean)
Kappa range (min–max) (95% CI)Observed agreement
(min–max)
Mean kappa (95% CI)Observed agreement MeanPrevalence %(mean)
SH score
(0–3)
0.73–0.9 (0.750.91
to 0.720.94)
0.6–0.950.6 (0.35 to 0.59)0.57Grade 0 : 18%
Grade 1 : 23.9%
Grade 2 : 31.6%
Grade 3 : 26.6%
0.40.82
(0.160.38 to 0.600.83)
0.54–0.880.51 (0.24 to 0.38)0.59Grade 0 : 60.4
Grade 1 : 20.8
Grade 2 : 14.7
Grade 3: 4.1
SH detection (yes/no)0.64–0.84 (0.630.88
to 0.730.86)
0.68 (0.54 to 0.78)0.470.84
(0.360.63 to 0.771)
0.43 (0.36 to 0.49)
PD score
(0–3)
0.9–1 (0.940.99
to 1–1)
0.88–10.86 (0.72 to 0.86)0.84Grade 0 : 24.1%
Grade 1 : 27.4%
Grade 2 : 29.2%
Grade 3 : 25.4%
0.480.88
(0.420.71 to 0.830.98)
0.76–0.940.61 (0.42 to 0.61)0.79Grade 0 : 80.4
Grade 1 : 10.2%
Grade 2 : 8.2
Grade 3 : 1.2
PD detection (yes/no)0.9–1 (0.940.99
to 1–1)
0.88 (0.80 to 0.95)0.470.9
(0.30.61 to 0.771)
0.53 (0.43 to 0.60)
Combined score*
(0–3)
0.75–1 (0.731
to 0.961)
0.69–10.65 (0.41 to 0.65)0.63Grade 0 : 14.9%
Grade 1 : 14.9%
Grade 2 : 34.2%
Grade 3: 28%
0.420.81
(0.440.66 to 0.720.94)
0.54–0.880.52 (0.36 to 0.520.60Grade 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 (0.710.87
to 0.720.84)
0.6 (0.5 to 0.58)0.450.84
(0.320.58 to 0.720.94)
0.51 (0.36 to 0.54)
  • *EULAR-OMERACT combined score.

  • PD, power Doppler signal; SH, synovial hypertrophy.