Table 3 Audiological performance of the active bone anchored hearing device (BB) before and after implantation
Frequency (Hz) | Before implant (n = 18) | After implant (n = 18) | Functional gain |
|---|---|---|---|
dB HL (SD) | dB HL (SD) | dB | |
250 | 66.6 (17.7) | 26.5 (4.8) | 40.1 |
500 | 64.7 (20.5) | 24.8 (8.3) | 39.9 |
1000 | 61.1 (21.1) | 20.5 (6.7) | 40.6 |
2000 | 58.6 (22.6) | 27.5 (6.0) | 31.1 |
4000 | 60.3 (22.8) | 31.5 (7.6) | 28.8 |
6000 | 60.3 (22.5) | 31.4 (7.7) | 28.9 |
8000 | 60.3 (22.8) | 31.3 (7.6) | 29.0 |