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Forest plots of hazard ratio (HR) of overall survival (OS); HR of progression‐free survival (PFS) associated with (a) immune checkpoint inhibitors (ICIs) ± chemotherapy versus chemotherapy ± placebo or (b) ICIs versus chemotherapy in first‐line treatment of non‐small cell lung cancer (NSCLC) population with squamous (SQ) or non‐SQ histological type. Chemo, chemotherapy; CI, confidence interval; Placbo, placebo.
