Figure 2

Kaplan‒Meier curves of OS and BCSS of the chemotherapy and non-chemotherapy groups in the total population. (A,B) Before PSM. (C,D) After PSM.

Kaplan‒Meier curves of OS and BCSS of the chemotherapy and non-chemotherapy groups in the total population. (A,B) Before PSM. (C,D) After PSM.