Table 2.
Inter-observer reproducibility values according to radiological examination modality in LIRADS classes and major parameters. The kappa value (k) for categorical variables and the intraclass correlation coefficient (ICC) for the nodule diameter were calculated to determine the level of interobserver compliance
| Factor | Fleiss’s k (95% CI) | ICC (95% CI) | |
|---|---|---|---|
| Arterial contrastenhancement | MRI | 0.387 (0.322-0.451) | – |
| CT | 0.483 (0.381-0.584) | – | |
| Washout | MRI | 0.525 (0.460-0.590) | – |
| CT | 0.336 (0.233-0.440) | – | |
| Pseudocapsule appearance | MRI | 0.487 (0.422-0.552) | – |
| CT | 0.412 (0.306-0.518) | – | |
| Threshold growth | MRI | 0.600 (0.454-0.746) | – |
| CT | 0.452 (0.175-0.729) | – | |
| Venous thrombus | MRI | 0.607 (0.544-0.671) | – |
| CT | 0.570 (0.468-0.671) | – | |
| LIRADS | MRI | 0.368 (0.337-0.399) | – |
| CT | 0.441 (0.389-0.494) | – | |
| Diameter | MRI | – | 0.676 (0.593-0.754) |
| CT | – | 0.833 (0.737-0.908) |