Fig. 1

The overall survival (OS) of patients with squamous cell carcinoma (SCC) and adenocarcinoma (AC) (A) before propensity score matching (PSM) (B) after PSM
The overall survival (OS) of patients with squamous cell carcinoma (SCC) and adenocarcinoma (AC) (A) before propensity score matching (PSM) (B) after PSM