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本文对某麻纺厂织袋、纺麻、梳麻车间从事噪声作业的工人,排除非噪声性致聋因素及生活噪声的影响,共检查212人424耳的纯音听力以及工作一个班次(6小时)后的暂时性所阈位移(TTS),同时测定各车间噪声强度(A声级),数据采用直线回归、逐步多元回归和协方差分析等统计学方法处理。结果表明:性别间和左右耳间的语频听阈及TTS均无显著性差异;车间噪声强度与语频听阈及TTS间存在着正相关;TTS与语频听阈、年龄、工龄之间存在着负相关。经多元逐步回归分析,语频听阈、噪声强度和工龄对TTS的影响具有统计学显著性意义。
In this paper, workers in a linen factory woven bags, linen, comb workshop to deal with noise, excluding non-noise-induced deafness factors and noise impact, a total of 212 hearing 424 pure tone hearing and work a shift (6 hours) (TTS). The noise intensity (A sound level) of each workshop was measured at the same time. The data were processed by statistical methods such as linear regression, stepwise multiple regression and covariance analysis. The results showed that there was no significant difference in the frequency threshold and the TTS between the sexes and between the left and right ears. There was a positive correlation between the noise intensity of the shop floor and the threshold of audio frequency and TTS. There was a negative correlation between TTS and audio frequency threshold, age and length of service Related. After multivariate stepwise regression analysis, the influence of audio frequency threshold, noise intensity and length of service on TTS was statistically significant.