Table 2 Grand averaged pure tone air conduction thresholds (dB HL) of 190 patients
| Hz | 250 | 500 | 1000 | 2000 | 3000 | 4000 | 6000 | 8000 |
|---|---|---|---|---|---|---|---|---|
| Right Ear | 14.1 ± 11.0 | 12.6 ± 12.3 | 16.0 ± 14.5 | 21.2 ± 19.0 | 33.3 ± 24.4 | 43.6 ± 25.1 | 46.4 ± 25.6 | 48.1 ± 27.0 |
| Left Ear | 15.1 ± 14.2 | 14.5 ± 15.6 | 16.3 ± 16.2 | 24.2 ± 21.7 | 36.9 ± 23.6 | 45.0 ± 25.1 | 47.9 ± 25.0 | 49.6 ± 26.9 |