Patent’s demographics and operation records

Group 1

Group 2

Males

19

18

Females

12

11

Age

(3.5 - 17) mean 8.9

(2 - 17) mean 9.6

Duration of surgery in minutes

(60 - 180) mean 92.4 minutes

(100 - 280) mean 130.34

Hospital stay

(2 - 15) mean 3.6 days

(2 - 8) mean 4.6