Fig. 3

Progression free survival (PFS) and overall survival (OS) in both groups. (A) OS of all patients. The OS in the study group was significantly longer than that in the control group (20 vs. 11.5 months; P = 0.005). (B) OS of the limited-stage patients. OS in the study group was significantly longer than in the control group (26.5 vs. 11.8 months; P = 0.033). (C) PFS of the extensive-stage patients. PFS in the study group was longer than the control group (5 vs. 2.7 months; P = 0.037). (D) OS of the extensive-stage patients. OS in the study group was significantly longer than in the control group (14.5 vs. 9 months; P = 0.038)