Table 1 Patient and treatment-related characteristics in relation to surgical procedure

Gender (n)

0.299

0.548

 Male

37

159

37

40

 Female

20

62

20

17

Age (yr)

0.002

0.700

 < 65

23

46

23

21

 ≥ 65

34

175

34

36

LVEF (%)

61.00 [60.00,62.00]

61.00 [60.00,63.00]

0.570

60.95 [59.50,62.50]

60.74[59.24,62.95]

0.889

BMI (kg/m²)

23.94 (± 3.28)

23.61 (± 3.05)

0.473

23.94 (± 3.28)

23.84 (± 2.85)

0.850

FEV1/FVC

82.16 [76.57,87.35]

78.80 [74.09,84.46]

0.054

82.16 [76.58,87.32]

81.63[76.32,87.11]

0.923

ASA classification (n)

0.878

1.000

 I

22

81

22

21

 II

35

140

35

36

Smoking (n)

19

87

0.403

19

22

0.558

Level of tumor (n)

0.097

0.971

 Upper 1/3

1

16

1

1

 Middle 1/3

46

152

46

45

 Lower 1/3

10

53

10

11

Hypertension (n)

17

78

0.438

17

18

1.000

Diabetes (n)

5

15

0.818

5

6

0.751

Neoadjuvant (n)

5

20

0.948

5

4

0.728

Surgery approaches (n)

0.060

1.000

 MIE/Mckenown

13

80

13

13

 OE/Ivor Lewis

44

141

44

44

Blood loss (ml)

200.00 [100.00,225.00]

200.00 [100.00,200.00]

0.012

194.44 [135.94,247.22]

179.17[115.48,238.54]

0.447

Length of operation (min)

225.00 [205.00,250.00]

215.00 [190.00,247.50]

0.116

226.00 [205.25,248.50]

228.33[197.50,266.25]

0.557

c TNM (n)

0.351

0.888

 0

5

18

5

6

 I

11

57

11

10

 II

26

110

26

29

 III

15

36

15

15