Normal

Mild

Moderate

Severe

p-value

Pre-operative

0

2

40

38

<0.05

Age (mean ± SD)

<18

0

0

2

9

≥18

0

2

38

29

Gender

Male

0

1

13

15

Female

0

1

27

23

Post-operative Follow up

1 month

80

0

0

0

6 months

75

0

4

1

12 months

74

0

4

2