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Mean bone conduction threshold in intervention group (before and one month after surgery).
| Bone conduction threshold (frequency) | Pre-operation | Post-operation | P-value |
|---|---|---|---|
| 500 Hz | 9.29 | 7.14 | 0.142 |
| 1 kHz | 10.36 | 8.57 | 0.441 |
| 2 kHz | 12.5 | 12.14 | 0.554 |
| 3 kHz | 15.36 | 16.79 | 0.213 |
| 4 kHz | 18.57 | 18.93 | 0.128 |
| 8 kHz | 21.79 | 20.71 | 0.118 |
