Table-II.

Comparison of pure tone audiometry results before and after surgery in patients (dB HL).

Time	ACT	BCT	ABG
Preoperative	56.32±8.75	25.07±5.12	31.25±6.42
One month after surgery	38.65±6.21a	24.89±4.98	13.76±4.23a
Three months after surgery	30.24±5.87ab	24.76±4.85	10.48±3.67ab
Six months after surgery	25.16±5.38abc	24.68±4.72	8.67±3.15abc
F	614.9	0.420	598.3
P	<0.001	0.740	<0.001

Note: Compared with preoperative,

^aP<0.05; Compared with one month after surgery,

^bP<0.05; Compared with three months after surgery, ^cP<0.05.