Table 4.
Inter-observer agreement for variables
| Inter-observer agreement for variables | |||
|---|---|---|---|
| Variable Type | Variable | Kappa value/ICC | 95%CI |
| Categorical | Tumor shape | 0.919 | 0.863-0.974 |
| circumferential | 0.979 | 0.965-1.0 | |
| T stage | 0.935 | 0.883-0.986 | |
| N stage | 0.940 | 0.898-0.981 | |
| Tumor type | 0.804 | 0.663-0.945 | |
| EMVI | 0.729 | 0.599-0.857 | |
| CRM | 0.812 | 0.694-0.930 | |
| Continuous | ADC | 0.8542 | 0.7190-0.9487 |
| Tumor length | 0.9885 | 0.9838-0.9963 | |
| MEMD | 0.9843 | 0.9643-0.9918 | |
| Mean | 0.7448 | 0.6663-0.8069 | |
| Variance | 0.7571 | 0.6818-0.8159 | |
| Skewness | 0.7402 | 0.6607-0.8032 | |
| Entropy | 0.7452 | 0.6670-0.8072 | |
| GLNU | 0.7239 | 0.6379-0.7916 | |
| RLNU | 0.7539 | 0.6776-0.8141 | |
Inter-observer agreement of categorical variables was evaluated by Kappa or weighted Kappa value, while inter-observer agreement of continuous ones was evaluated by ICC