Table 2 Audiological performance of the passive bone anchored hearing device (AT) before and after implantation
Frequency (Hz) | Before implant (n = 8) | After implant (n = 8) | Audiological gain |
|---|---|---|---|
dB HL (SD) | dB HL (SD) | dB | |
250 | 69.3 (16.6) | 25.0 (8.2) | 44.3 |
500 | 66.7 (15.2) | 21.5 (8.5) | 45.2 |
1000 | 62.2 (15.6) | 17.5 (10.1) | 44.7 |
2000 | 55.6 (13.8) | 28.5 (19.1) | 27.1 |
4000 | 63.3 (15.8) | 47.5 (19.2) | 15.8 |
6000 | 63.5 (16.1) | 46.8 (19.7) | 16.7 |
8000 | 63.6 (19.7) | 46.0 (20.1) | 17.6 |