Khaldari Fatemeh, Khanjani Narges, Bahrampour Abbas, Ghotbi Ravandi Mohammad Reza, Arabi Mianroodi Ali Asghar
Department of Biostatistics and Epidemiology, Faculty of Health, Kerman University of Medical Sciences, Kerman, Iran.
Neurology Research Center, Kerman University of Medical Sciences , Kerman, Iran.
Iran J Otorhinolaryngol. 2020 Jan;32(108):11-20. doi: 10.22038/ijorl.2019.37555.2229.
Noise is one of the most common and harmful physical factors in the working environment and has physical and psychological effects on individuals. In this study, the audiometry results of industrial workers were modeled and the effect of noise and other factors on hearing loss was examined.
This was a longitudinal study based on the records of workers who had worked over 10 years in the industry and had recorded audiometries since their employment. Data was analyzed through linear mixed models.
During each year of noise exposure, hearing loss was 1.9 db at 4000 Hz; 0.059 in low frequencies and 0.62 db in high frequencies. At 8000 Hz the effect of the age at employment on hearing loss was significant (P=0.014). At low frequencies the interaction of smoking and age at employment was significantly related to hearing loss (P˂0.001).
This study showed that despite acquaintance with safety measures, workers still face hearing loss in industry and employers should put workers under more surveillance for using protective gear. Smoking might be another risk factor for hearing loss.
噪音是工作环境中最常见且有害的物理因素之一，会对个体产生生理和心理影响。在本研究中，对产业工人的听力测定结果进行建模，并考察了噪音及其他因素对听力损失的影响。
这是一项纵向研究，基于在该行业工作超过10年且自入职以来有听力测定记录的工人的档案。通过线性混合模型对数据进行分析。
在每年的噪音暴露期间，4000赫兹时听力损失为1.9分贝；低频为0.059分贝，高频为0.62分贝。在8000赫兹时，入职年龄对听力损失的影响显著（P = 0.014）。在低频时，吸烟与入职年龄的交互作用与听力损失显著相关（P＜0.001）。
本研究表明，尽管了解安全措施，但工人在工业中仍面临听力损失问题，雇主应加强对工人使用防护装备的监督。吸烟可能是听力损失的另一个风险因素。
