Table 2: Pre-operative audiometry results.

n %
ABG
≤ 30 dB 30 33.3
> 30 dB 60 66.7
Mean 35 (18-60)
Pre-op BC
≤ 30 dB 41 45.6
> 30 dB 49 54.4
Mean 34.4 (16.7-66.7)
Pre-op AC
≤ 70 dB 54 60.0
> 70 dB 36 40.0
Mean 69 (27.7-108.7)