Fig. 1

Overall survival and relapse-free survival curves after complete resection of cN1 non-small cell lung cancer. a The overall survival (OS) curve and 5-year survival rate among all patients (5-year OS rate: 45.1%), b The relapse-free survival (RFS) curve and 5-year survival rate among all patients (5-year RFS rate: 43.0%). *P < 0.05