Fig. 2

Kaplan-Meier survival curves for Stage II-IV patients with risk (above and below median) as defined by the multivariable model - see Table 2. The black curves do not use Heterogeneity as a risk factor, the red ones do. The p-value in the lower left evaluates (via a likelihood ratio analysis) the significance of the improved separation between the low and high risk groups when the Heterogeneity information is included