摘要
目的探讨峰度评估复杂噪声所致高频听力损失(HFHL)的可行性。方法采用判断抽样方法,选择3家金属工具制造企业273名噪声作业人员为研究对象;检测工作场所噪声强度和峰度,结合噪声作业工龄计算累积噪声接触量(CNE),采用峰度指标调整的CNE(CNE′),比较CNE和CNE′与HFHL检出率的相关性。结果研究对象接触的噪声强度中位数和第25、75百分位数[M(P_(25),P_(75))]为91.9(88.3,97.3)dB(A),噪声强度超标率81.0%;峰度M(P_(25),P_(75))为8.3(7.9,27.3),峰度>4.0者占100.0%。研究对象HFHL检出率为39.6%(108/273);随着CNE和CNE′的上升,HFHL检出率均呈增高趋势(P值均<0.01)。CNE′评估HFHL检出风险的拟合优度优于CNE(决定系数分别为0.91和0.83)。结论峰度可作为辅助参量对CNE进行调整后应用于评估复杂噪声所致HFHL的风险。
Objective To investigate the feasibility of kurtosis in evaluating high frequency hearing loss(HFHL)caused by complex noise.Methods A total of 273 noise-exposed workers in three metal tool manufacturing enterprises were chosen as study subjects using a judgement sampling method.The noise intensity and kurtosis in the workplace was measured.Cumulative noise exposure(CNE)was calculated from noise intensity and working age and the CNE was adjusted using kurtosis(CNE′).CNE and CNE′were used to evaluate the risk of HFHL,and the effects of the two methods were compared.Results The median and25,75 percentiles[M((P_(25),P_(75))]of noise exposed intensity in the study subjects was 91.9(88.3,97.3)dB(A),and the incidence of noise exposure exceeded the national occupational exposure limit accounted for 81.0%.The M(P_(25),P_(75))of the kurtosis was 8.3(7.9,27.3),and kurtosis>4.0 accounted for 100.0%.The detection rate of HFHL was 39.6%(108/273).The detection rate of HFHL increased with the increase of CNE and CNE′(all P<0.01).The goodness-of-fit of CNE′in assessing the risk of HFHL detection was better than that of CNE(coefficients of determination were 0.91 and 0.83,respectively).Conclusion Kurtosis can be used as an auxiliary parameter to adjust the CNE and then applied to evaluate the risk of HFHL caused by complex noise.
作者
孙雪
董秋颖
王春波
马恩红
冀荷香
杨立新
李增敏
李建国
SUN Xue;DONG Qiu-ying;WANG Chun-bo;MA En-hong;JI He-xiang;YANG Li-xin;LI Zeng-min;LI Jian-guo(School of Public health,North China University of Science and Technology,Tangshan,Heibei 063210,China;不详)
出处
《中国职业医学》
CAS
北大核心
2022年第3期287-291,296,共6页
China Occupational Medicine
基金
河北省重点职业病危害防控技术研究(19277702D)
河北省医学科学研究课题(20200700)
河北省医学科学研究重点课题计划(20180935)。
关键词
听力损失
噪声
强度
峰度
累积噪声接触量
风险评估
Hearing loss
Noise
Strength
Kurtosis
Cumulative noise exposure
Risk assessment
