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CNA患耳在不同听阈的分布 耳(%)
| PTA/dB HL | 0.5 kHz | 1.0 kHz | 2.0 kHz | 4.0 kHz |
| < 26 | 0(0.00) | 1(1.75) | 0(0.00) | 0(0.00) |
| 26~40 | 1(1.75) | 0(0.00) | 1(1.75) | 1(1.75) |
| 41~60 | 7(12.28) | 5(8.77) | 2(3.51) | 2(3.51) |
| 61~70 | 7(12.28) | 5(8.77) | 3(5.26) | 5(8.77) |
| 71~80 | 3(5.26) | 7(12.28) | 6(10.53) | 2(3.51) |
| >80 | 39(68.43) | 39(68.43) | 45(78.95) | 47(82.46) |
