Figure 1.

Comparison of overall survival and disease-free survival of patients with lung adenocarcinoma after curative resection according to EGFR mutation type. Kaplan–Meier estimation was used to compare overall survival (A) and disease-free survival (B) of patients with EGFR mutation-positive lung adenocarcinoma according to EGFR mutation subtype. Significant difference in OS were observed between simple and compound EGFR mutation (simple mutation 83.7 months vs. compound mutation 72.8 months, P = 0.020). P-value was obtained by Breslow test.