marginal significancep=0.08
Furthermore, the proportion of cases showing intrathoracic progression among all events at the first relapse was 83.0% (112/135) in the chemotherapy-alone group, 58.3% (14/24) in the TRT group, and 77.6% (38/49) in the ICI group; the proportion in the TRT group was significantly lower than that in the chemotherapy-alone group (p=0.006) and showed a marginal significance in comparison with that in the ICI group (p=0.08).