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对150名长期暴露于中低剂量噪声[79～92dB(A)],未出现语频听力损伤的工人体检,发现高频听力损伤42人(35％)。进行累积噪声暴露量(dB(A)年)与高频听力损伤患病率(％)的分析,证实两
Of 150 workers who had long-term exposure to moderate to low doses of noise [79-92 dB (A)] who did not show audiologic hearing loss, 42 (35%) had high-frequency hearing impairment. Analysis of cumulative noise exposure (dB (A) years) and prevalence of high-frequency hearing loss (%) confirmed that two