Table 1 Demographics and comorbidity profile of the patients

Age (years)

62.89 ± 6.30 (46–73)

63.06 ± 6.27 (47–74)

0.160

Gender (male/female)

7/49

7/49

–

BMI (kg/m²)

27.96 ± 2.97 (21.48–35.54)

27.79 ± 3.01 (22.03–35.54)

0.541

ASA

0.813

 1

1

1

 2

29

28

 3

26

27

Anesthesia

0.810

 General anesthesia

31

32

 Non-general anesthesia

25

24

 Hypertension

22

22

1.000

 Coronary heart disease

8

8

1.000

 Diabetes

14

14

1.000

 Cerebral infarction

1

1

1.000

 Respiratory system

6

6

1.000

 Digestive system

2

2

1.000

 Urinary system

1

1

1.000

 III

18

25

0.174

 IV

38

31

0.174