Frequency | N | Not diagnosed | mild | moderate | severe | ||||||||||||
n | % | χ2 | P | n | % | χ2 | P | n | % | χ2 | P | n | % | χ2 | P | ||
Speech | 168 | 60 | 35.71 | - | - | 84 | 50.00 | - | - | 15 | 8.93 | - | - | 9 | 5.36 | - | - |
3 kHz | 168 | 45 | 26.79 | 3.117 | 0.077 | 94 | 55.95 | 1.195 | 0.274 | 19 | 11.31 | 0.524 | 0.469 | 10 | 5.95 | 0.056 | 0.813 |
4 kHz | 168 | 33 | 19.64 | 10.835 | 0.001 | 106 | 63.10 | 5.862 | 0.015 | 18 | 10.71 | 0.302 | 0.582 | 11 | 6.55 | 0.213 | 0.645 |
6 kHz | 168 | 34 | 20.24 | 9.985 | 0.002 | 104 | 61.90 | 4.830 | 0.028 | 20 | 11.90 | 0.797 | 0.372 | 10 | 5.95 | 0.056 | 0.813 |
3 kHz + 4 kHz | 168 | 39 | 23.21 | 6.315 | 0.012 | 101 | 60.12 | 3.476 | 0.062 | 18 | 10.71 | 0.302 | 0.582 | 10 | 5.95 | 0.056 | 0.813 |
3 kHz + 6 kHz | 168 | 39 | 23.21 | 6.315 | 0.012 | 99 | 58.93 | 2.700 | 0.100 | 20 | 11.90 | 0.797 | 0.372 | 10 | 5.95 | 0.056 | 0.813 |
4 kHz + 6 kHz | 168 | 34 | 20.24 | 9.985 | 0.002 | 106 | 63.10 | 5.862 | 0.015 | 18 | 10.71 | 0.302 | 0.582 | 10 | 5.95 | 0.056 | 0.813 |
3 kHz + 4 kHz + 6 kHz | 168 | 37 | 22.02 | 7.667 | 0.002 | 102 | 60.71 | 3.902 | 0.048 | 19 | 11.31 | 0.524 | 0.469 | 10 | 5.95 | 0.056 | 0.813 |