Forest plots for all drugs (OS and PFS HRs combined): excellent versus reduced PS comparison and ECOG PS levels comparison (see online supplementary 1). ECOG PS, Eastern Cooperative Oncology Group Performance Status; OS, overall survival; PFS, progression-free survival; PS, performance status. Forest plots for all drugs (OS and PFS HRs combined): excellent versus reduced PS comparison and ECOG PS levels comparison (see online supplementary 1). ECOG PS, Eastern Cooperative Oncology Group Performance Status; OS, overall survival; PFS, progression-free survival; PS, performance status. Sierra Cheng et al. ESMO Open 2017;2:e000225 Copyright © European Society for Medical Oncology. All rights reserved.