Table 2.
Inter-observer agreement in training and validation cohort.
| variables | Training cohort | Validation cohort | ||
|---|---|---|---|---|
| ICC value | 95 %CI | ICC value | 95 %CI | |
| LD | 0.899 | 0.860–0.926 | 0.935 | 0.878–0.963 |
| SD | 0.964 | 0.952–0.972 | 0.921 | 0.839–0.957 |
| CTV-N | 0.802 | 0.669–0.874 | 0.820 | 0.730–0.882 |
| CTV-A | 0.883 | 0.795–0.927 | 0.916 | 0.870–0.946 |
| CTV-P | 0.909 | 0.882–0.931 | 0.925 | 0.885–0.952 |
| CTV-D | 0.940 | 0.922–0.954 | 0.932 | 0.894–0.956 |
LD, SD indicate the tumor of long diameter and short diameter, respectively. CTV-N, CTV-A, CTV-P, and CTV-D CT values during nonenhanced, arterial, portal, and delayed phases, respectively.