Fig. 2From: PD-1 inhibitors versus chemotherapy as second-line treatment for advanced esophageal squamous cell carcinoma: a meta-analysisForest plots for antitumor activity in patients treated with PD-1 inhibitors versus chemotherapy: (A) OS (B) PFS (C) ORR (D) DCR. Abbreviations. OS: overall survival; PFS: progression-free survival; ORR: objective response rate; DCR: disease control rateBack to article page