Fig. 5.
Kaplan-Meier estimate of OS by assigned treatment and Pgp expression.
Survival estimates include only patients evaluable for Pgp expression (n = 197). Pgp expression is measured by Kolmogorov-Smirnov D value, with Pgp+ and Pgp− defined as D ≥ 0.20 and D < 0.20, respectively. Tick marks indicate surviving patients.