1.

患者的一般临床特征

General clinical characteristics of the patients

Variable	n	%
Targeted drug
Gefitinib	48	39.0
Erlotinib	75	61.0
Gender	123
Female	62	50.4
Male	61	49.6
Age (yr)
> 60	41	33.3
≤60	82	66.7
Smoking history
Yes	44	35.8
No	79	64.2
Disease stage
IV	102	82.9
IIIb	21	17.1
Pathological type
Adenocarcinoma	97	78.9
Other	26	21.1
Line
Second line	77	62.6
Third line	46	37.4
Performance status score
1	96	78.0
≥2	27	22.0