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目的观察降噪耳塞对煤矿接噪工人噪声性听力损失的预防效果。方法以208名(416耳)佩戴3M1110子弹型带线耳塞3年的煤矿接噪工人为耳塞组,分析其3年前后纯音听阈测定结果,并与未佩戴耳塞的同单位接噪工人对照组进行比较。结果用SPSS 18软件分析。结果耳塞组与对照组比较,佩戴耳塞前,两组听力差异无统计学意义(P>0.05);佩戴耳塞3年后,两组听力差异有统计学意义(P<0.05)。耳塞组佩戴降噪耳塞3年前后听力减退差异无统计学意义(P>0.05)。结论降噪耳塞对保护煤矿接噪工人的听力,防止噪声性听力损失具有一定作用。
Objective To observe the preventive effect of noise reduction earplugs on the noise-induced hearing loss of coal mine workers. Methods A total of 208 (416 ears) wearing 3M1110 bullet-type earbuds with earphones for 3 years were used as earplug workers. The results of pure tone hearing threshold after 3 years were analyzed and compared with those of workers without ear plugs Compare Results were analyzed by SPSS 18 software. Results Compared with the control group, there was no significant difference in hearing between the two groups before wearing the earplugs (P> 0.05). After 3 years of earplugs wearing, there was significant difference between the two groups (P <0.05). There was no significant difference in hearing loss between earplugs wearing noise-reducing earplugs 3 years ago (P> 0.05). Conclusions Noise reduction earplugs have a certain effect on protecting the hearing of mine workers and preventing noise hearing loss.