Table 1 Basic clinicopathological characteristics of the analyzed NSCLC cohort

Mean age at surgery

63 years

63 years

63 years

p = 0.79

62 years

63 years

p = 0.13

61 years

63 years

p = 0.25

 Male

1016 (69.3 %)

89

921

p = 0.03

76

910

p < 0.01

14

852

p < 0.01

 Female

448 (30.5 %)

56

390

57

383

10

356

 Adenocarcinoma

711 (48.5 %)

97

611

p < 0.01

123

564

p < 0.01

26

685

p < 0.01

 Squamous Cell Carcinoma

586 (40.0 %)

34

548

0

575

0

586

 Adenosquamous Carcinoma

55 (3.8 %)

5

49

4

50

1

54

 Large Cell Carcinoma

71 (4.8 %)

8

63

3

67

1

70

 Pleomorphic Carcinoma

42 (2.9 %)

1

41

3

38

0

42

 pT1a

125 (8.5 %)

21

102

p = 0.07

16

103

p = 0.02

4

121

p = 0.10

 pT1b

158 (10.8 %)

19

138

20

135

5

153

 pT2a

641 (43.8 %)

62

578

64

554

15

626

 pT2b

245 (16.7 %)

22

221

16

228

2

243

 pT3

248 (16.9 %)

17

230

13

230

1

247

 pT4

48 (3.3 %)

4

43

4

44

1

47

 pN0

755 (51.5 %)

83

667

p = 0.16

80

651

p = 0.03

16

739

p = 0.57

 pN1

353 (24.0 %)

27

324

15

330

2

351

 pN2

351 (23.9 %)

35

315

38

309

10

341

 pN3

6 (0.4 %)

0

6

0

4

0

6

 pM0

1426 (97.3 %)

143

1275

p = 0.42

129

1261

p = 0.77

27

1399

p = 0.53

 pM1a

6 (0.4 %)

0

6

2

4

1

5

 pM1b

33 (2.3 %)

2

31

2

29

0

33

I A

190 (12.9 %)

25

162

p = 0.32

25

156

p = 0.05

6

184

p = 0.48

 IB

344 (23.5 %)

32

312

38

293

7

337

 IIA

277 (18.9 %)

28

248

15

259

3

274

 IIB

165 (11.3 %)

18

145

11

152

1

164

 IIIA

422 (28.8 %)

40

380

39

376

11

411

 IIIB

29 (1.9 %)

0

29

2

25

0

29

 IV

38 (2.6 %)

2

36

3

33

0

38