Table 7 Intra-reviewer agreement for CO-RADS and the RSNA chest CT classification system stratified according to different categories and reviewers
Rating category | Reviewer 1 | Reviewer 2 | Reviewer 3 |
|---|---|---|---|
CO-RADS | |||
CO-RADS 1 | 1.000 | 0.959 | 1.000 |
CO-RADS 2 | − 0.007 | − 0.007 | 0.000 |
CO-RADS 3 | − 0.014 | − 0.007 | − 0.007 |
CO-RADS 4 | 0.850 | 0.793 | 0.735 |
CO-RADS 5 | 1.000 | 1.000 | 0.893 |
Overall | 0.933 | 0.932 | 0.900 |
RSNA | |||
Negative | 0.915 | 0.959 | 1.000 |
Atypical | − 0.007 | − 0.007 | 0.000 |
Indeterminate | 0.850 | 1.000 | 0.704 |
Typical | 1.000 | 1.000 | 0.897 |
Overall | 0.932 | 0.966 | 0.904 |