N

Occurrence of postoperative complication

P

Age (years)

>66

<66

34

29

16 (47.1%)

13 (44.8%)

0.859

Operation time (minutes)

>644

<644

32

31

16 (50%)

13 (41.9%)

0.521

Intraoperative blood loss (mL)

>330

<330

32

31

18 (56.3%)

11 (35.5%)

0.098

Number of dissected lymph nodes

>52

<52

32

31

13 (40.6%)

16 (51.6%)

0.382

Clinical stage

II

III

25

38

10 (40%)

19 (50%)

0.439

Surgery

Open method

Thoracoscopic method

26

37

15 (57.7%)

14 (37.8%)

0.12

NAC

Yes

No

38

25

15 (39.5%)

14 (56%)

0.198