Table 3.
The C-index of gender, BAR, TNM stage and BAR+TNM stage for prediction of OS in the SCCE.
| Training cohort | Validation cohort | |||
|---|---|---|---|---|
| Factors | C-index (95% CI) | P | C-index (95% CI) | P |
| For OS | ||||
| Gender | 0.583(0.507~0.658) | 0.529 (0.420~0.636) | ||
| BAR | 0.592(0.522~0.661) | 0.658 (0.550~0.747) | ||
| TNM stage | 0.614(0.530~0.698) | 0.512 (0.392~0.632) | ||
| BAR + TNM stage | 0.655(0.571~0.740) | 0.688 (0.570~0.806) | ||
| Gender vs. TNM stage | 0.541 | 0.400 | ||
| BAR vs. TNM stage | 0.595 | 0.006 | ||
| BAR + TNM stage vs. TNM stage | 0.151 | 0.002 | ||
C-index, concordance index; CI, confidence interval; BAR, APOB/APOA-1; P-values are calculated based on normal approximation using function rcorrp.cens in Hmisc package.