Table 4.

Clinical and pathologic characteristics of the study cases according to the heterogeneity of mutation

		Homogenous (n = 28)	Heterogeneous (n = 13)	P-value
Age (mean ± SD); yrs		59.7 ± 12.31	59.6 ± 8.17	0.996*
Gender	Male	9	4	0.930**
	Female	19	9
Smoking status	Never smoker	22	11	0.132**
	Current smoker	1	2
	Ex-smoker	5	0
pStage	IIA	12	5	0.331**
	IIB	0	1
	IIIA	16	7
Maximum tumor diameter (cm)		3.0 ± 1.02	3.28 ± 1.15	0.401*
Histologic subtype	Lepidic predominant	0	1
	Acinar predominant	20	9	0.732**
	Papillary and micropapillary predominant	6	2
	Othersa	2	1

*P-value was obtained from t-test; **P-value was obtained from Pearson’s Chi-square test; ^aincludes solid types and invasive mucinous adenocarcinoma