Kaplan-Meier survival curves for patients who received PDT, PCD, PAD and PD

1A: The OS of all the 151 eligible patients who received PDT, PCD, PAD and PD. The median OS for PD arm was 42. 0(95% CI: 20. 1–63. 9 months) months while other arms were not reached, but the median OS for PDT, PCD and PAD was significant longer than PD (P=0. 042, 0. 039, 0. 010).