Fig. 2.

Kaplan Meier plots of overall survival support the choice of a DT ratio of 1 as the discriminating DT ratio. The median overall survival of those with a DT ratio <1 was 11.4 months, and those with a DT ratio$\ge$ 1 was 24.5 months. Cutoffs less than 1 did not discriminate and had comparable overall survivals.