Wild type

Mutant EGFR

p value

Age

<65

25

15

0.3475

≥65

38

15

Sex

Male

59

26

0.2615

Female

4

4

pStage

I

39

22

0.2781

II - III

24

8

pT status

pT1

32

23

0.0177

pN1 - 2

31

7

pN status

pN0

48

24

0.6813

pN1 - 2

15

6

Brinkman index

<500

19

14

0.2782

500 - 1000

25

10

>1000

19

6

CEA

Normal

36

19

0.5702

High

27

11

Histology

Lepidic dominant

7

10

0.0095

Others

56

20

CT findings

Pure/mixed GGO

8

10

0.0185

Solid

55

20