Haapaniemi J
Department of Otolaryngology, University Central Hospital of Turku, Finland.
Eur Arch Otorhinolaryngol. 1995;252(7):391-4. doi: 10.1007/BF00167307.
In the present study, pure-tone audiometry was used in 687 Finnish school children, aged 6-15 years, to determine the prevalence of a 6 kHz acoustic dip and related factors among three age groups. Trained audiometricians tested air conduction thresholds in a sound-proof room. A total of 57 children (8.3%) had a clear-cut dip of at least 20 dB at 6 kHz. This dip was more pronounced in older children and in boys. A thorough case history was obtained by questionnaire, with logistic regression analysis showing that low birth weight (< 2500 g) and childhood measles were the only factors associated with occurrence of the 6 kHz dip in school-aged children.
在本研究中，对687名6至15岁的芬兰学童进行了纯音听力测试，以确定三个年龄组中6千赫声学低谷的患病率及相关因素。经过培训的听力测定人员在隔音室中测试气导阈值。共有57名儿童（8.3%）在6千赫处有至少20分贝的明显低谷。这种低谷在年龄较大的儿童和男孩中更为明显。通过问卷调查获得了详细的病史，逻辑回归分析表明，低出生体重（<2500克）和儿童期麻疹是与学龄儿童出现6千赫低谷相关的唯一因素。
