Manar Manish K, Verma Veerendra, Mohan Uday, Shukla Sheo P, Singh Shivendra K
Department of Community Medicine and Public Health, KG Medical University, Lucknow, Uttar Pradesh, India.
Otorhinolaryngology and Head Neck Surgery, KG Medical University, Lucknow, Uttar Pradesh, India.
J Family Med Prim Care. 2019 Jun;8(6):2023-2028. doi: 10.4103/jfmpc.jfmpc_220_19.
Noise-induced hearing loss, one of the most common and preventable occupational hazard, occurs due to repeated and continuous exposure of loud noise, A single exposure of an impulse of noise at the level of 130--140 dB or long and repeated exposures to loud sounds to an average level of 85 dB or higher for an 8-h period can cause permanent loss of hearing.
To study and compare hearing loss over different audiometric frequencies among autorickshaw and non-commercial institutional personal car drivers.
This was a cross-sectional comparative study conducted at a tertiary medical college, located in Lucknow during October 2017-November 2018.
The sample size was calculated using EpiInfo7. We took a sample size of 300 drivers, out of which 150 three-wheeler autorickshaw drivers (Tempo), that is, group I and 150 non-commercial car drivers, that is, group II were selected.
For statistical analysis, "Chi-square test of independence" and student's t-tests were used.
The mean age at which drivers in group I and group II started work was 23.91 ± 7.63 years an d 23.60 ± 5.58 years, respectively. The mean hearing loss in Group I was 21.15 ± 8.65 dB and in group II it was 13.34 ± 5.79 dB.
Autorickshaw drivers who were exposed to louder noise, that is, autorickshaw drivers in group I had more sensory neural hearing loss than the non-commercial car drivers, that is, group II.
噪声性听力损失是最常见且可预防的职业危害之一，它是由于长期反复暴露于高强度噪声所致。单次暴露于130 - 140分贝的脉冲噪声，或长时间反复暴露于平均强度达85分贝及以上的噪声中8小时，都可能导致永久性听力丧失。
研究并比较人力三轮车和非商业机构私家车司机在不同听力频率下的听力损失情况。
这是一项横断面比较研究，于2017年10月至2018年11月在勒克瑙的一所三级医学院进行。
使用EpiInfo7计算样本量。我们选取了300名司机作为样本，其中150名三轮人力车司机（即第一组）和150名非商业私家车司机（即第二组）。
采用“独立性卡方检验”和学生t检验进行统计分析。
第一组和第二组司机开始工作的平均年龄分别为23.91 ± 7.63岁和23.60 ± 5.58岁。第一组的平均听力损失为21.15 ± 8.65分贝，第二组为13.34 ± 5.79分贝。
暴露于更强噪声的人力三轮车司机，即第一组司机，比非商业私家车司机，即第二组司机，有更多的感音神经性听力损失。
