何为, 盖冰冰, 姜晓琴. 80至85分贝噪声环境中作业人群听力损失情况[J]. 上海预防医学, 2018, 30(10): 861-864. DOI: 10.19428/j.cnki.sjpm.2018.18820
引用本文: 何为, 盖冰冰, 姜晓琴. 80至85分贝噪声环境中作业人群听力损失情况[J]. 上海预防医学, 2018, 30(10): 861-864. DOI: 10.19428/j.cnki.sjpm.2018.18820
HE Wei, GAI Bing-bing, JIANG Xiao-qin. Hearing losses among workers working in 80 to 85 dB noise environment[J]. Shanghai Journal of Preventive Medicine, 2018, 30(10): 861-864. DOI: 10.19428/j.cnki.sjpm.2018.18820
Citation: HE Wei, GAI Bing-bing, JIANG Xiao-qin. Hearing losses among workers working in 80 to 85 dB noise environment[J]. Shanghai Journal of Preventive Medicine, 2018, 30(10): 861-864. DOI: 10.19428/j.cnki.sjpm.2018.18820

80至85分贝噪声环境中作业人群听力损失情况

Hearing losses among workers working in 80 to 85 dB noise environment

  • 摘要:
    目的调查声级≥80分贝(dB)并<85 dB噪声环境中作业工人听力损失情况,为此类人群听力监护提供依据。
    方法在上海市2家作业环境噪声等效A声级≥80 dB并<85 dB的企业中,以简单随机抽样的方法抽取1 360名作业工人,按噪声接触工龄分成2组进行听力检查,并对作业工人年龄、性别进行校正。
    结果噪声接触工龄≤20年组未发现明显的听力损失(双耳高频平均听阈值< 40 dB)者,接噪工龄>20年组工人经年龄、性别校正后,有4人双耳高频平均听阈值≥40 dB,其中2人同时伴有语频听力下降, 两组间差异无统计学意义(χ精确法2=3.10, P>0.05)。
    结论声级≥80 dB并<85 dB噪声环境中作业人员接噪工龄与听力损失尚无关联。鉴于接噪工龄>20年组有听力损失的个例发生,建议将接噪工龄>20年的工人作为听力监护的重点目标人群。

     

    Abstract:
    ObjectiveTo investigate hearing losses among workers working in noise environment with pressure level≥80 dB or < 85 dB and offer the basis for hearing care among this crowd.
    MethodsTwo enterprises in Shanghai were chosen for the study, whose working environment was with equivalent A-weighted sound pressure level ≥80 dB or < 85 dB. By means of random sampling, a total of 1 360 workers were selected from the two enterprises, who were divided into two groups for hearing tests based on their noise exposure service length with their age and gender corrected.
    ResultsThere were no obvious hearing losses found in the group with noise exposure service length≤20 years (average hearing thresholds in high frequency of both ears were less than 40 dB). There were 4 workers whose average hearing thresholds in high frequency of both ears were greater than or equal to 40 dB, and who were in the group where workers′ noise exposure service length was more than 20 years after correction of their age and gender, and 2 of them were accompanied with speech frequency hearing loss.There was no statistical significance in the difference between the two groups(χexact method2=3.10, P > 0.05).
    ConclusionThere is no correlation between noise exposure service length and hearing losses in working under environment with sound pressure level ≥80 dB or < 85 dB. As there are a few cases of hearing losses occurring in the group with workers′ noise exposure service length over 20 years. It is advised that workers whose noise exposure service length is over 20 years should be the key targets in hearing care and supervisions.

     

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