Table 1.

Demographic characteristics of the study population (n = 385)

	Number
Gender
Male	198
Female	187
Age
Range	28–79
Median	59
<60	207
≥60	178
Smoking status
Never	235
Former/current	150
Stage
I	121
II	79
III	185
PD-L1 expression
Yes	186
No	199
Gene alteration
EGFR	205
ALK	18
KRAS	16
HER2	9
ROS1	8
PIK3CA	6
RET	6
BRAF	2
NRAS	1
Concurrent alteration	24
Pan-negative	90
Adjuvant treatment
Yes	269
No	116