Table 1.
Mean hearing thresholds (dB Hearing Level (dB HL)) for responders and nonresponders
| Right ear (Hz) | 250 | 500 | 1000 | 2000 | 3000 | 4000 | 6000 | 8000 |
| Responders | 20.00 (9.07) | 20.56 (11.10) | 21.67 (13.93) | 30.56 (19.77) | 42.50 (22.64) | 49.44 (22.02) | 55.28 (21.59) | 56.67 (22.62) |
| Nonresponders | 20.29 (9.10) | 26.47 (16.28) | 27.94 (18.96) | 34.12 (21.30) | 47.35 (22.78) | 56.47 (21.63) | 60.59 (21.71) | 60.59 (20.61) |
| Left ear (Hz) | 250 | 500 | 1000 | 2000 | 3000 | 4000 | 6000 | 8000 |
| Responders | 20.00 (9.39) | 21.67 (11.50) | 20.56 (13.27) | 33.06 (20.23) | 42.78 (22.24) | 47.78 (20.16) | 52.50 (18.65) | 56.67 (22.94) |
| Nonresponders | 20.88 (9.72) | 22.65 (10.91) | 23.82 (12.81) | 34.41 (16.00) | 45.29 (19.88) | 55.29 (21.83) | 60.59 (19.03) | 57.65 (16.97) |