论文部分内容阅读
目的探讨噪声接触时间和噪声强度对噪声作业工人听力损失的风险程度。方法采用回顾性队列研究分析广东省中山市1 411名噪声作业工人连续3年纯音气导听阈和噪声监测数据。结果 1 411名中山市噪声作业工人2012—2014年双耳高频听阈存在时间主效应和噪声强度主效应(P<0.05)。噪声作业工人2012、2013、2014年的双耳高频听阈分别为(30.88±7.21)、(30.57±6.91)、(30.37±7.21)d BHL,2013年与2012年相比,噪声作业工人双耳高频听阈升高(P<0.05),2014年与2013年相比,双耳高频听阈无差异(P>0.05);不同噪声强度双耳高频听阈不同(P<0.05),≥88 d B(A)噪声强度的工人双耳高频听阈最高,2012—2014年分别为(32.83±9.45)、(32.20±9.11)、(32.22±9.52)(d BHL)。结论噪声接触时间和噪声强度与噪声接触工人双耳高频听阈损失存在剂量-反应关系。
Objective To explore the risk of hearing loss of noise workers exposed to noise exposure time and noise intensity. Methods A retrospective cohort study was conducted to analyze the pure tone guidance and noise monitoring data of 1 411 noise workers in Zhongshan City, Guangdong Province. Results 1 411 Zhongshan city noise workers 2012-2014 binaural high-frequency hearing thresholds have main effects of time and noise intensity (P <0.05). The binaural high-frequency hearing thresholds of noise workers in 2012, 2013 and 2014 were (30.88 ± 7.21), (30.57 ± 6.91) and (30.37 ± 7.21) d BHL, respectively. Compared with 2012, (P <0.05). Compared with 2013, the hearing threshold of binaural was no significant difference (P> 0.05). The hearing threshold of binaural high-frequency with different noise intensity was different (P <0.05) Workers with B (A) intensity had the highest binaural high-frequency hearing thresholds, which were (32.83 ± 9.45), (32.20 ± 9.11) and (32.22 ± 9.52) (d BHL) in 2012-2014, respectively. Conclusion There is a dose-response relationship between noise exposure time and noise intensity and high-frequency hearing threshold loss in workers exposed to noise.