1.

基线特征

Characteristics of all patients

Characteristics	n=54
ECOG: Eeastern Cooperative Oncology Group; PS: performance status.
Age
Median (yr)	59.5 (30-84)
< 65 (%)	32 (59%)
≥65 (%)	22 (41%)
Gender
Male (%)	14 (26%)
Female (%)	40 (74%)
Tumor type
Adenocarcenoma (%)	53 (98%)
Non-characteristics (%)	1 (2%)
Smoking status
Smoking (%)	10 (19%)
Non-smoking (%)	44 (81%)
EGFR mutation
Del19 (%)	33 (61%)
L858R (%)	21 (39%)
ECOG PS
0-1 (%)	37 (69%)
≥2 (%)	17 (31%)
Tumor stage
Ⅲb (%)	4 (7%)
Ⅳ (%)	50 (93%)