Evaluation of relationship between noise-induced hearing loss with age and work duration in tile industry

Abstract Background: Noise is a harmful environmental factor which may cause hearing loss, hypertension, and higher rates of occupational accidents and reduced production. Considering the various intensities and frequencies produced by industrial equipments, we assessed the effects of noise on heari...

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Main Authors: Z Loukzadeh, F Foroughinasab, B Saranjam, A ShojaaddinyArdekani, R Soltani
Format: Article
Language:English
Published: Shahid Sadoughi University of Medical Science 2011-10-01
Series:طب کار
Subjects:
Online Access:http://tkj.ssu.ac.ir/article-1-42-en.pdf
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author Z Loukzadeh
F Foroughinasab
B Saranjam
A ShojaaddinyArdekani
R Soltani
author_facet Z Loukzadeh
F Foroughinasab
B Saranjam
A ShojaaddinyArdekani
R Soltani
author_sort Z Loukzadeh
collection DOAJ
description Abstract Background: Noise is a harmful environmental factor which may cause hearing loss, hypertension, and higher rates of occupational accidents and reduced production. Considering the various intensities and frequencies produced by industrial equipments, we assessed the effects of noise on hearing of tile industry workers. Methods: This cross-sectional study was done on 372 workers exposed to noise level of ≥85 dB in a tile factory in Yazd. After clinical examination and completing the questionnaire, audiometry was done by an audiologist for all. Data was then analyzed using SPSS software. Results: Our data showed mean age and work duration was 32.2 ± 6.9 and 9.5 ± 6.4 years respectively. Mean hearing thresholds for both ears were higher in 4000 and then 8000 Hz, as well as in higher frequencies rather than lower ones. Also, left ear showed more sensitivity than right ear. There was a significant relationship between hearing threshold and age and work duration (p<0.001). Conclusion: Our findings showed that exposure to noise in tile industry increases mean hearing thresholds in higher frequencies especially for 4000 Hz, while age and work duration are important factors.
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institution Kabale University
issn 2251-7189
2251-8274
language English
publishDate 2011-10-01
publisher Shahid Sadoughi University of Medical Science
record_format Article
series طب کار
spelling doaj-art-ff6c0d6bf9b94a5d9a8e35f15b0d9fb82025-08-25T05:51:22ZengShahid Sadoughi University of Medical Scienceطب کار2251-71892251-82742011-10-01322430Evaluation of relationship between noise-induced hearing loss with age and work duration in tile industryZ Loukzadeh0F Foroughinasab1B Saranjam2A ShojaaddinyArdekani3R Soltani4 Shahid Sadoughi University,Yazd Shahid Beheshti University,Yazd Shahid Beheshti University,Yazd Shahid Sadoughi University,Yazd Shahid Sadoughi University,Yazd Abstract Background: Noise is a harmful environmental factor which may cause hearing loss, hypertension, and higher rates of occupational accidents and reduced production. Considering the various intensities and frequencies produced by industrial equipments, we assessed the effects of noise on hearing of tile industry workers. Methods: This cross-sectional study was done on 372 workers exposed to noise level of ≥85 dB in a tile factory in Yazd. After clinical examination and completing the questionnaire, audiometry was done by an audiologist for all. Data was then analyzed using SPSS software. Results: Our data showed mean age and work duration was 32.2 ± 6.9 and 9.5 ± 6.4 years respectively. Mean hearing thresholds for both ears were higher in 4000 and then 8000 Hz, as well as in higher frequencies rather than lower ones. Also, left ear showed more sensitivity than right ear. There was a significant relationship between hearing threshold and age and work duration (p<0.001). Conclusion: Our findings showed that exposure to noise in tile industry increases mean hearing thresholds in higher frequencies especially for 4000 Hz, while age and work duration are important factors.http://tkj.ssu.ac.ir/article-1-42-en.pdfoccupational hearing lossnoisehearing threshold
spellingShingle Z Loukzadeh
F Foroughinasab
B Saranjam
A ShojaaddinyArdekani
R Soltani
Evaluation of relationship between noise-induced hearing loss with age and work duration in tile industry
طب کار
occupational hearing loss
noise
hearing threshold
title Evaluation of relationship between noise-induced hearing loss with age and work duration in tile industry
title_full Evaluation of relationship between noise-induced hearing loss with age and work duration in tile industry
title_fullStr Evaluation of relationship between noise-induced hearing loss with age and work duration in tile industry
title_full_unstemmed Evaluation of relationship between noise-induced hearing loss with age and work duration in tile industry
title_short Evaluation of relationship between noise-induced hearing loss with age and work duration in tile industry
title_sort evaluation of relationship between noise induced hearing loss with age and work duration in tile industry
topic occupational hearing loss
noise
hearing threshold
url http://tkj.ssu.ac.ir/article-1-42-en.pdf
work_keys_str_mv AT zloukzadeh evaluationofrelationshipbetweennoiseinducedhearinglosswithageandworkdurationintileindustry
AT fforoughinasab evaluationofrelationshipbetweennoiseinducedhearinglosswithageandworkdurationintileindustry
AT bsaranjam evaluationofrelationshipbetweennoiseinducedhearinglosswithageandworkdurationintileindustry
AT ashojaaddinyardekani evaluationofrelationshipbetweennoiseinducedhearinglosswithageandworkdurationintileindustry
AT rsoltani evaluationofrelationshipbetweennoiseinducedhearinglosswithageandworkdurationintileindustry