Table 3 Inter-rater agreement of different categories of O-RADS
O-RADS category | Observer 1 | Observer 2 | Kappa | 95% CI | P value | Agreement percentage |
|---|---|---|---|---|---|---|
O-RADS 1 | 9 | 8 | 0.937 | 0.815–1.0 | < 0.001* | 99.24 |
O-RADS 2 | 43 | 44 | 0.983 | 0.949–1.0 | < 0.001* | 99.2 |
O-RADS 3 | 47 | 47 | 0.834 | 0.735–0.933 | < 0.001* | 92.37 |
O-RADS 4 | 17 | 16 | 0.827 | 0.679–0.974 | < 0.001* | 96.18 |
O-RADS 5 | 15 | 16 | 0.963 | 0.892–1.0 | < 0.001* | 99.24 |
Overall | 131 | 131 | 0.874 | 0.806–0.942 | < 0.001* | 90.84 |