Table 2 Comparison of readers’ MRI classification against true outcome (per breast)
Ground truth result | Total | Kappa (95%CI) | ||
|---|---|---|---|---|
Cancer | Normal | |||
Reader Classification | ||||
All Readers | ||||
Cancer | 1776 | 1038 | 2814 | |
No cancer | 296 | 6140 | 6436 | |
Total | 2072 | 7178 | 9250 | 0.63 (0.61–0.65) |
Group 1 | ||||
Cancer | 843 | 341 | 1184 | |
No cancer | 109 | 2957 | 3066 | |
Total | 952 | 3298 | 4250 | 0.72 (0.70–0.74) |
Group 2 | ||||
Cancer | 933 | 697 | 1630 | |
No cancer | 187 | 3183 | 3370 | |
Total | 1120 | 3880 | 5000 | 0.56 (0.54–0.59) |