Table 6

Multivariate Cox regression (stepwise) analysis of overall survival showing relative hazard (RH), degrees of freedom (df), and 95% confidence intervals (CI)

ParameterRHdfCIP
Tumor thickness, mm1.07a11.03–1.120.005
Stage2<0.001
 I–II vs. III3.7311.29–10.80.015
 I–II vs. IV78.714.89–0.002
  • a Per mm increment. For competing nonsignificant factors, see Table 5<$REFLINK> .