Table 2 Comparison of intraoperative and postoperative date of different groups

operation time(min)

124.20 ± 36.15)[50–244]

114.79 ± 35.15[48–242]

2.422

0.016

intraoperative blood loss (ml)

101.55 ± 73.35[10–400]

88.23 ± 83.71[20–600]

1.558

0.12

lymph node dissection station

5.38 ± 1.02[3–9]

5.27 ± 1.04[3–8]

0.992

0.322

lymph node dissection number

11.9 ± 4.55[4–30]

10.74 ± 3.83[4–23]

2.548

0.011

number of ICU transfers after surgery

4(2.3)

4(2.4)

0.07

0.932

postoperative chest drainage tube indwelling time

6.02 ± 3.95[2–27]

4.47 ± 2.33[2–15]

4.43

<0.001

postoperative hospital stay (day)

8.51 ± 4.38[3–33]

6.57 ± 2.51[3–17]

5.03

<0.001

postoperative average daily chest drainage

207.79 ± 65.27[66.7–410]

174.91 ± 58.75[50–432]

4.857

<0.001

hospital mortality

1(0.6)

0(0)

0.943

0.332

postoperative complication

arrhythmia

7(4.0)

3(1.8)

1.415

0.234

atelectasis

10(5.7)

6(3.7)

0.817

0.366

pulmonary infection

47(27)

20(12.2)

11.664

0.001

respiratory failure

3(1.7)

0(0)

1.23

0.091

chyle fistula

4(2.3)

0(0)

2.103

0.147

hydrothorax

7(4.0)

3(1.8)

0.754

0.385

severe subcutaneous emphysema

12(6.9)

2(1.2)

6.853

0.009

persistent air leakage

21(12.1)

8(4.9)

5.566

0.018