Table 2.
Correlation between pre- and post-treatment clinical parameters in tinnitus patients related to noise-induced hearing loss.
| Pre-treatment (mean ± SD) | Post-treatment (mean ± SD) | p value | |
|---|---|---|---|
| Serum zinc level (μg/dl) | 73.6 ± 11.6 | 84.6 ± 12.5 | 0.001 |
| Hearing threshold (dB HL) | |||
| 0.5k + 1k + 2k + 4k/4 | 21.8 ± 8.9 | 22.1 ± 8.8 | 0.675 |
| 6k + 8k/2 | 41.5 ± 18.9 | 42.9 ± 18.1 | 0.091 |
| Speech test | |||
| SRT (dB HL) | 15.9 ± 5.7 | 16.3 ± 8.5 | 0.727 |
| WDS (%) | 99.4 ± 1.9 | 98.9 ± 2.5 | 0.086 |
| Tinnitus frequency (Hz) | 5973.7 ± 1965.8 | 6052.6 ± 2026. | 0.822 |
| Tinnitus loudness (dB HL) | 47.0 ± 18.3 | 46.7 ± 17.8 | 0.886 |
| THI-total scores | 38.3 ± 18.9 | 30.0 ± 18.6 | 0.024 |
| THI-emotional scores | 13.4 ± 9.1 | 9.7 ± 7.9 | 0.032 |
| THI-functional scores | 12.8 ± 9.3 | 10.2 ± 8.6 | 0.124 |
| THI-catastrophic scores | 12.1 ± 3.0 | 10.1 ± 3.9 | 0.010 |
| DPOAEa (Hz) | |||
| 562 (positive rate, %) | 33/38 = 86.8% | 28/38 = 73.7% | 0.150 |
| 796 | 34/38 = 89.5% | 33/38 = 86.8% | 1.000 |
| 1125 | 34/38 = 89.53% | 34/38 = 89.5% | 1.000 |
| 1595 | 30/38 = 78.9% | 25/38 = 65.8% | 0.200 |
| 2249 | 13/38 = 34.2% | 13/38 = 34.2% | 1.000 |
| 3187 | 9/38 = 23.7% | 7/38 = 18.4% | 1.000 |
| 4501 | 12/38 = 31.6% | 13/38 = 34.2% | 1.000 |
| 6375 | 15/38 = 39.5% | 10/38 = 26.3% | 0.768 |
a
frequency of 2f1-f2.