Table 1 Demographics and baseline characteristics of the patients

Age, years (mean ± SD)

48.7 (± 11.6)

52.6 (± 11.0)

0.137

Sex, n (%)

 Female

16

47.06

23

56.1

0.435

 Male

18

52.94

18

43.9

Hemorrhoid grade

 II

1

2.94

2

4.88

0.398*

 III

31

91.18

39

95.12

 IV

2

5.88

0

0

Hospitals, n (%)

1 (SNUH)

5

14.71

13

31.71

0.146*

2 (SNUBH)

15

44.12

19

46.34

3 (BRM)

6

17.65

2

4.88

4 (DH)

8

23.53

7

17.07

Operative time, min (mean ± SD)

34.4 (± 23.2)

26.8 (± 13.9)

0.100