Table 4.
Discrimination Ability (Harrell C index) Comparison of Different Stage System Model
| Predicted outcomes | Embedment of other factors | Harrell concordance index | ||||
|---|---|---|---|---|---|---|
| T.N.M stage | AJCC stage group | ENSAT stage | sAJCC stage group | sENSAT stage | ||
| Overall mortality | No | 0.721 | 0.698 | 0.718 | 0.697 | 0.717 |
| Overall mortality | Embedment* | 0.767 | 0.759 | 0.766 | 0.758 | 0.764 |
| Cancer specific mortality | No | 0.737 | 0.706 | 0.725 | 0.704 | 0.723 |
| Cancer specific mortality | Embedment* | 0.776 | 0.765 | 0.771 | 0.761 | 0.767 |
*
including age, treatment, chemotherapy; sENSAT stage, simplified ENSAT stage; sAJCC stage group, simplified AJCC stage group.