Table 3.
The average hearing level (dBHL) in pure tone audiometry
| Average hearing level (dBHL) | Frequency (Hz) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 125 | 250 | 500 | 1,000 | 2,000 | 3,000 | 4,000 | 6,000 | 8,000 | |
| Group one (n = 119 ears) | |||||||||
| Before e.s. | 25.6 | 27 | 26.4 | 31.4 | 35.2 | 41.1 | 47.6 | 56.4 | 51.6 |
| Directly after e.s. | 29.4 | 28.5 | 27.5 | 27.2 | 30.1 | 36.5 | 42.0 | 53.4 | 49.6 |
| 90 days after e.s. | 30.3 | 29.1 | 27.3 | 28.3 | 31.0 | 36.9 | 42.5 | 53.3 | 49.4 |
| Group two (n = 65 ears) | |||||||||
| Before placebo e.s | 30.9 | 31.4 | 31.7 | 33.2 | 35 | 39.1 | 42.0 | 50.0 | 49.4 |
| Directly after placebo e.s. | 27.9 | 29.1 | 31.1 | 31.5 | 33.2 | 35.3 | 41.5 | 47.0 | 45.3 |
| 90 days after placebo e.s. | 25.6 | 25.6 | 27.8 | 33.3 | 36.1 | 35.0 | 39.5 | 47.8 | 47.8 |
e.s. electrical stimulation