Schmuziger Nicolas, Probst Rudolf, Smurzynski Jacek
Department of Otorhinolaryngology, University Hospital, Basel,
Ear Hear. 2004 Apr;25(2):127-32. doi: 10.1097/01.aud.0000120361.87401.c8.
The purposes of the study were: (1) To evaluate the intrasession test-retest reliability of pure-tone thresholds measured in the 0.5-16 kHz frequency range for a group of otologically healthy subjects using Sennheiser HDA 200 circumaural and Etymotic Research ER-2 insert earphones and (2) to compare the data with existing criteria of significant threshold shifts related to ototoxicity and noise-induced hearing loss.
Auditory thresholds in the frequency range from 0.5 to 6 kHz and in the extended high-frequency range from 8 to 16 kHz were measured in one ear of 138 otologically healthy subjects (77 women, 61 men; mean age, 24.4 yr; range, 12-51 yr) using HDA 200 and ER-2 earphones. For each subject, measurements of thresholds were obtained twice for both transducers during the same test session. For analysis, the extended high-frequency range from 8 to 16 kHz was subdivided into 8 to 12.5 and 14 to 16 kHz ranges. Data for each frequency and frequency range were analyzed separately.
There were no significant differences in repeatability for the two transducer types for all frequency ranges. The intrasession variability increased slightly, but significantly, as frequency increased with the greatest amount of variability in the 14 to 16 kHz range. Analyzing each individual frequency, variability was increased particularly at 16 kHz. At each individual frequency and for both transducer types, intrasession test-retest repeatability from 0.5 to 6 kHz and 8 to 16 kHz was within 10 dB for >99% and >94% of measurements, respectively. The results indicated a false-positive rate of <3% in reference to the criteria for cochleotoxicity for both transducer types. In reference to the Occupational Safety and Health Administration Standard Threshold Shift criteria for noise-induced hazards, the results showed a minor false-positive rate of <1% for the HDA 200.
Repeatability was similar for both transducer types. Intrasession test-retest repeatability from 0.5 to 12.5 kHz at each individual frequency including the frequency range susceptible to noise-induced hearing loss was excellent for both transducers. Repeatability was slightly, but significantly poorer in the frequency range from 14 to 16 kHz compared with the frequency ranges from 0.5 to 6 or 8 to 12.5 kHz. Measurements in the extended high-frequency range from 8 to 14 kHz, but not up to 16 kHz, may be recommended for monitoring purposes.
本研究的目的是：（1）使用森海塞尔HDA 200环绕式耳机和音特美研究公司的ER - 2插入式耳机，评估一组耳科健康受试者在0.5 - 16 kHz频率范围内纯音阈值的测试期间重测信度；（2）将数据与现有的与耳毒性和噪声性听力损失相关的显著阈值变化标准进行比较。
使用HDA 200和ER - 2耳机，对138名耳科健康受试者（77名女性，61名男性；平均年龄24.4岁；范围12 - 51岁）的一只耳朵在0.5至6 kHz频率范围以及8至16 kHz扩展高频范围内测量听觉阈值。对于每个受试者，在同一次测试期间，两种换能器的阈值测量均进行两次。为了分析，将8至16 kHz的扩展高频范围细分为8至12.5 kHz和14至16 kHz范围。每个频率和频率范围的数据分别进行分析。
对于所有频率范围，两种换能器类型在重复性方面没有显著差异。随着频率增加，测试期间的变异性略有但显著增加，在14至16 kHz范围内变异性最大。分析每个单独频率时，16 kHz处的变异性尤其增加。对于每种换能器类型，在每个单独频率以及0.5至6 kHz和8至16 kHz的测试期间重测重复性，分别在>99%和>94%的测量中在10 dB以内。结果表明，两种换能器类型相对于耳蜗毒性标准的假阳性率均<3%。参照职业安全与健康管理局噪声引起危害的标准阈值变化标准，HDA 200的结果显示假阳性率略低，<1%。
两种换能器类型的重复性相似。对于两种换能器，在包括易受噪声性听力损失影响的频率范围在内的每个单独频率上，0.5至12.5 kHz的测试期间重测重复性都非常好。与0.5至6 kHz或8至12.5 kHz频率范围相比，14至16 kHz频率范围内的重复性略差，但有显著差异。对于监测目的，可能建议在8至14 kHz的扩展高频范围内进行测量，但不包括高达16 kHz的范围。
