| Raw Count | % Total | ||||||
| Maximum Frequency | Positive Testing | Negative Testing | Total | Maximum Frequency | Positive Testing | Negative Testing | Total |
| <100 Hz | 1 | 0 | 1 | <100 Hz | 0.4% | 0.0% | 0.4% |
| 100-200 Hz | 53 | 53 | 106 | 100-200 Hz | 20.4% | 20.4% | 40.8% |
| 201-400 Hz | 61 | 64 | 125 | 201-400 Hz | 23.5% | 24.6% | 48.1% |
| 401-605 Hz | 15 | 13 | 28 | 401-605 Hz | 5.8% | 5.0% | 10.8% |
| 130 | 130 | 260 | 50.0% | 50.0% | 100.0% | ||