Table 7. Correlation between EGFR mutations and clinicopathological features.

	EGFR mutation		P value
	Positive	Negative
Gender			0.2035
Male	25	16
Female	69	19
Age			0.0236
<60	46	22
≥60	48	13
Location			0.0456
Left	73	35
Right	109	36
Pathology			0.2781
Adenocarcinoma	170	66
Squamous carcinoma	2	0
Large cell carcinoma	9	4
Atypical hyperplasia of adenoma	1	1
TNM stage			0.0869
<Ib	112	52
≥Ib	70	18