|Application of the Kurtosis Statistic to the Evaluation of the Risk of Hearing Loss in Workers Exposed to High-Level Complex Noise|
|Zhao, Yi-ming1; Qiu, Wei2; Zeng, Lin1; Chen, Shan-song3; Cheng, Xiao-ru1; Davis, Robert I.2; Hamernik, Roger P.2|
|刊名||EAR AND HEARING|
|WOS标题词||Science & Technology|
|类目[WOS]||Audiology & Speech-Language Pathology ; Otorhinolaryngology|
|研究领域[WOS]||Audiology & Speech-Language Pathology ; Otorhinolaryngology|
|关键词[WOS]||GAUSSIAN-NOISE ; EXPOSURES ; ENERGY ; APPLICABILITY|
Objective: Develop dose-response relations for two groups of industrial workers exposed to Gaussian or non-Gaussian (complex) types of continuous noises and to investigate what role, if any, the kurtosis statistic can play in the evaluation of industrial noise-induced hearing loss (NIHL).
Design: Audiometric and noise exposure data were acquired on a population (N = 195) of screened workers from a textile manufacturing plant and a metal fabrication facility located in Henan province of China. Thirty-two of the subjects were exposed to non-Gaussian (non-G) noise and 163 were exposed to a Gaussian (G) continuous noise. Each subject was given a general physical and an otologic examination. Hearing threshold levels (0.5-8.0 kHz) were age adjusted (ISO-1999) and the prevalence of NIHL at 3, 4, or 6 kHz was determined. The kurtosis metric, which is sensitive to the peak and temporal characteristics of a noise, was introduced into the calculation of the cumulative noise exposure metric. Using the prevalence of hearing loss and the cumulative noise exposure metric, a dose-response relation for the G and non-G noise-exposed groups was constructed.
Results: An analysis of the noise environments in the two plants showed that the noise exposures in the textile plant were of a Gaussian type with an Leq(A)(8hr) that varied from 96 to 105 dB whereas the exposures in the metal fabrication facility with an Leq(A)(8hr) = 95 dB were of a non-G type containing high levels (up to 125 dB peak SPL) of impact noise. The kurtosis statistic was used to quantify the deviation of the non-G noise environment from the Gaussian. The dose-response relation for the non-G noise-exposed subjects showed a higher prevalence of hearing loss for a comparable cumulative noise exposure than did the G noise-exposed subjects. By introducing the kurtosis variable into the temporal component of the cumulative noise exposure calculation, the two dose-response curves could be made to overlap, essentially yielding an equivalent noise-induced effect for the two study groups.
Conclusions: For the same exposure level, the prevalence of NIHL is greater in workers exposed to non-G noise environments than for workers exposed to G noise. The kurtosis metric may be a reasonable candidate for use in modifying exposure level calculations that are used to estimate the risk of NIHL from any type of noise exposure environment. However, studies involving a large number of workers with well-documented exposures are needed before a relation between a metric such as the kurtosis and the risk of hearing loss can be refined. (Ear & Hearing 2010; 31; 527-532)
|作者单位||1.Peking Univ, Hosp 3, Ctr Clin Epidemiol Res, Beijing 100191, Peoples R China|
2.SUNY Coll Plattsburgh, Auditory Res Lab, Plattsburgh, NY 12901 USA
3.Ctr Dis Control ZhengZhou, Zhengzhou, Henan, Peoples R China
|Zhao, Yi-ming,Qiu, Wei,Zeng, Lin,et al. Application of the Kurtosis Statistic to the Evaluation of the Risk of Hearing Loss in Workers Exposed to High-Level Complex Noise[J]. EAR AND HEARING,2010,31(4):527-532.|
|APA||Zhao, Yi-ming.,Qiu, Wei.,Zeng, Lin.,Chen, Shan-song.,Cheng, Xiao-ru.,...&Hamernik, Roger P..(2010).Application of the Kurtosis Statistic to the Evaluation of the Risk of Hearing Loss in Workers Exposed to High-Level Complex Noise.EAR AND HEARING,31(4),527-532.|
|MLA||Zhao, Yi-ming,et al."Application of the Kurtosis Statistic to the Evaluation of the Risk of Hearing Loss in Workers Exposed to High-Level Complex Noise".EAR AND HEARING 31.4(2010):527-532.|