1.

49例患者的一般特征

Baseline characteristics of the study population (n=49)

Variables	All (n=49)	EGFR mutation (n=36)	EGFR wild-type (n=13)	P
EGFR: epidermal growth factor receptor.
Gender				0.17
Male	26	17	9
Female	23	19	4
Performance status				0.88
0-1	31	23	8
2	18	13	5
Age (year)				0.99
Median	57	57	58
< 65	34	25	9
≥65	15	11	4
Smoking characteristics				0.41
Yes	18	12	6
No	31	24	7
Stage				0.94
Ⅲb	4	3	1
Ⅳ	45	33	12
Histology				0.83
Adenocarcinoma	44	34	10
Non-adenocarcinoma	5	2	3