Non-COPD

COPD

p Value

Age

<65

49

11

0.093

≥65

106

44

Gender

Male

60

44

<0.001

Female

95

11

Smoking

Current/Former

65

45

<0.001

Never

90

10

Histology

Adeno

128

33

<0.001

Others

17

6

Squamous

10

16

pStage

I

123

42

0.645

II-III

32

13

pT status

pT1

115

38

0.469

pT2 - 3

40

17

pN status

pN0

136

47

0.667

pN1 - 2

19

8

CEA

Norm

118

40

0.618

High

37

15