Table 3 Demographic and clinical characteristics of patients

Age (year, mean ± s.d.)

54.1 ± 10.6

52.4 ± 10.3

0.357

Sex (male/female)

24/36

28/32

0.461

BMI (kg/m²)

22.5 ± 3.3

22.8 ± 3.1

0.609

Education level (year)

10.6 ± 2.8

10.2 ± 2.6

0.419

ASA (II/III)

31/29

34/26

0.514

Comorbidities

Hypertension (yes/no)

33/27

26/34

0.201

Diabetes (yes/no)

10/50

12/48

0.637

COPD (yes/no)

18/42

21/39

0.559

PaO₂ (mm Hg, mean ± s.d.)

87.9 ± 6.8

87.4 ± 6.4

0.679

PaCO₂ (mm Hg, mean ± s.d.)

40.4 ± 2.5

40.2 ± 2.3

0.649

FEV1 (%, mean ± s.d.)

92.4 ± 16.1

93.1 ± 15.8

0.811

DLCO (%, mean ± s.d.)

81.2 ± 22.7

80.6 ± 23.0

0.886

Pathologic stage

0.132

IIA

22

28

IIB

11

16

IIIA

25

16

IIIB

2

0

Resection (lobectomy/segmentectomy)

35/25

37/23

0.709