Abstract
Objective: To determine the frequency and risk factors of occupational noise induced hearing loss.
 Study Design: Cross sectional study.
 Place and Duration of Study: Dispensary Unit of Jaith Bhuta Sugar Mill near Rahim Yar Khan, Southern Punjab.from Aug 2017 to Jan 2018.
 Methodology: This study was conducted using nonprobability consecutive sampling. n=300 workers of bothgenders aged 18-40 years were assessed. Basic demographic parameters, otoscopic examination and Pure Tone Audiometry were used for data collection. The Data was analyzed by using SPSS version 21.
 Results: Study included 215 (71.7%) males and 85 (28.3%) females with male to female ratio of 2.53: 1 and meanage of 28.34 ± 4.61 years. The frequency rate of hearing impairment (HI) was 90 (30%) out of 300 respondents inthis study. Out of 70 (100%) of respondents were affected with duration of job of 6-10 years. There was significant association between gender, age, education, duration of noise exposure with occupational noise induced hearing loss with p-value <0.001.
 Conclusion: There was high frequency of occupational noise induced hearing loss (ONIHL) with significantrisk factors being level and duration of exposure to noise (ETN), age, gender, education and hearing protectivedevices (HPD)’s.
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