Characteristics

Group I

Group II

p-value (t-test)

Pre-operative ABG

31.94 ± 11.7

28.24 ± 10.5

0.622

Post-operative ABG

24.8 ± 10.55

17.9 ± 7.08

0.117

p-value for comparison within the group

<0.01

<0.01

Hearing Gain

7.06 ± 3.9

10.29 ± 4.83

0.387