Figure 2.
Kaplan-Meier curves of overall survival (OS) for elderly patients according to performance status (PS) compared with younger patients (0: <65 years, 1: ≥65 years with PS 0 and 2: ≥65 years with PS 1 and 2).
Kaplan-Meier curves of overall survival (OS) for elderly patients according to performance status (PS) compared with younger patients (0: <65 years, 1: ≥65 years with PS 0 and 2: ≥65 years with PS 1 and 2).