Axelsson A, Jerson T, Lindberg U, Lindgren F
Scand Audiol. 1981;10(2):91-6. doi: 10.3109/01050398109076167.
A hearing examination of 538 teenage boys in vocational school classes--implying future on-the-job noise exposure--showed a hearing loss (greater than 20 dB HL at any frequency) in 15% of the cases. Few correlations could be demonstrated between hearing loss and specific leisure time activities. There was, however, a correlation between high frequency hearing loss in the left ear and hereditary hearing loss. The most affected frequency was 6 kHz, suggesting a noise etiology--a suggestion emphasized by the noisy hobbies of these teenagers. It cannot be excluded that a hereditary deficiency could either manifest itself as a localized dip at 6 kHz or reveal itself as an increased vulnerability to noise, identified at young age as a high frequency dip at 6 kHz.
对538名职业学校班级中的青少年男性进行的听力检查（这意味着他们未来会在职场接触噪音）显示，15%的受检者存在听力损失（在任何频率下听力损失大于20 dB HL）。听力损失与特定的休闲活动之间几乎没有相关性。然而，左耳高频听力损失与遗传性听力损失之间存在相关性。受影响最严重的频率是6 kHz，这表明存在噪音病因——这些青少年嘈杂的爱好也进一步证实了这一点。不能排除遗传性缺陷可能表现为6 kHz处的局部听力下降，或者表现为对噪音的易感性增加，在年轻时表现为6 kHz处的高频听力下降。
