Hearing Status and Noise Exposure Levels of Workers at a Laundry Plant in Sri Lanka
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Purpose: The aim of this study was to determine the hearing status and noise exposure levels of workers at a laundry plant in Sri Lanka. Methods: A descriptive cross-sectional study was done to determine the noise levels workers were exposed to during their shifts, to evaluate hearing-related complaints, to evaluate audiometric measures of the workers, and lastly to determine the association between the job category and hearing status. The study included 107 workers between the age of 20~50 years. Noise levels of the laundry plant were measured and data was gathered via an interviewer-administered questionnaire and screening and diagnostic hearing tests were performed. Results: The minimum and maximum noise levels were 63.1 dBA and 100.3 dBA. Among workers, 40.18% indicated abnormal audiograms. Among those who had abnormal audiograms, 31.77% were diagnosed with noise induced hearing loss (NIHL) in the right ear while 28.03% had NIHL in the left ear. Conclusion: There was no significant association between the degree of hearing loss and exposure duration of the workers as well as hearing status with reference to the job category. However, the workers in the dryer and hydro sections were at high risk for NIHL, as the mean Leq levels at the laundry plant exceeded the 85 dBA action level recommended by the Occupational Safety and Health Administration (OSHA). Hence it can be concluded that laundry plants are hazardous occupational settings for hearing loss, thus preventive measures, such as hearing conservation programs must be adopted for the well-being of workers.
Abstract
Purpose: The aim of this study was to determine the hearing status and noise exposure levels of workers at a laundry plant in Sri Lanka. Methods: A descriptive cross-sectional study was done to determine the noise levels workers were exposed to during their shifts, to evaluate hearing-related complaints, to evaluate audiometric measures of the workers, and lastly to determine the association between the job category and hearing status. The study included 107 workers between the age of 20~50 years. Noise levels of the laundry plant were measured and data was gathered via an interviewer-administered questionnaire and screening and diagnostic hearing tests were performed. Results: The minimum and maximum noise levels were 63.1 dBA and 100.3 dBA. Among workers, 40.18% indicated abnormal audiograms. Among those who had abnormal audiograms, 31.77% were diagnosed with noise induced hearing loss (NIHL) in the right ear while 28.03% had NIHL in the left ear. Conclusion: There was no significant association between the degree of hearing loss and exposure duration of the workers as well as hearing status with reference to the job category. However, the workers in the dryer and hydro sections were at high risk for NIHL, as the mean Leq levels at the laundry plant exceeded the 85 dBA action level recommended by the Occupational Safety and Health Administration (OSHA). Hence it can be concluded that laundry plants are hazardous occupational settings for hearing loss, thus preventive measures, such as hearing conservation programs must be adopted for the well-being of workers.
참고문헌 (22)
- Ashraf, H. D., "Frequency of hearing loss among textile industry workers of weaving unit in Karachi, Pakistan", The Journal of the Pakistan Medical Association, 59(8), pp.575~579 (2009)
- Basner, M., "Auditory and non-auditory effects of noise on health", Lancet, 383(9925), pp.1325~1332 (2014)
- Chang, S. J., "Prevalence and risk factors of noise-induced hearing loss among liquefied petroleum gas(LPG)cylinder infusion workers in Taiwan", Industrial Health, 47(6), pp.603~610 (2009)
- Clark, J. G., "Uses and abuses of hearing loss classification", ASHA, 23(7), pp.493~500 (1981)
- Concha-Barrientos, M., "Occupational Noise : Assessing the Burden of Disease from Work-Related Hearing Impairment at National and Local Levels" (2004), World Health Organization
- El Dib, R. P., "Prevalence of high frequency hearing loss consistent with noise exposure among people working with sound systems and general population in Brazil : a cross-sectional study", BMC Public Health, 8, pp.151~ (2008)
- Elias, S. O., "Noise-induced hearing loss in laundry workers in lagos", Nigerian Medical Practitioner, 44(1), pp.1~6 (2003)
- The State of Occupational Safety and Health in the European Union – Pilot Study, "European Agency for Safety and Health at Work", European Communities, ~ (2000)
- Fontoura, F. P., "Noise effects on hospital laundry workers’hearing", Revista CEFAC, 16(2), pp.395~404 (2014)
- Guida, H. L., "Audiologic and otoacoustic emission evaluation in individuals exposed to noise and plaguecides", International Archives of Otorhinolaryngology, 13(3), pp.264~269 (2009)
- Ivarsson, A., "Models for studying the progression of hearing loss caused by noise", Scandinavian Audiology, 21(2), pp.79~86 (1992)
- Mihailović, D., "The effects of industrial noise of higher spectrum on the workers’ auditory perception abilities", Vojnosanitetski Pregled, 73(11), pp.1030~1037 (2016)
- "Central Environment Authority" (1996)[URL]
- Nandi, S. S., "Occupational noise-induced hearing loss in India", Indian Journal of Occupational and Environmental Medicine, 12(2), pp.53~56 (2008)
- Nelson, D. I., "The global burden of occupational noise-induced hearing loss", American Journal of Industrial Medicine, 48(6), pp.446~458 (2005)
- Ologe, F. E., "Hazard of noise induced hearing loss(NIHL)among operators of music recording", retail centres in Nigeria, 2005, pp.36(2), 17~20
- Silva, M. C. D., "Levels of noise in a public hospital laundry", Revista CEFAC, 13(3), pp.472~478 (2011)
- Soltanzadeh, A., "Noise induced hearing loss in Iran:(1997-2012): systematic review article", Iranian Journal of Public Health, 43(12), pp.1605~1615 (2014)
- Suter, A, "The Noise Manual" (2000), American Industrial Hygiene Association
- Tahir, N., "Occupational noise exposure in manufacturing industries in Malaysia", BMC Public Health, 14(1), pp.1~ (2014)
- Thorne, P. R., "Epidemiology of noise-induced hearing loss in New Zealand", The New Zealand Medical Journal, 121(1280), pp.33~44 (2008)
- "Occupational Noise Exposure: Revised Criteria 1998" (1998)[URL]