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Noise-induced Hearing Loss within a Hearing Conservation Program in a Manufacturing Company
Occupational noise exposure is a global health problem afflicting most of our industrial sector. Unlike developed countries, there is minimal data on occupational noise exposure for developing countries.
An evaluation of the burden of this disease is important in guiding the development of public health policies, even more since occupational noise exposure can be prevented using practical measures. The study determined the incidence proportion and associated factors of noise-induced hearing loss in a manufacturing company with a 10-year hearing conservation program.
The study is a nested case control conducted in a manufacturing factory in the Philippines. The subjects were employees who underwent annual audiological evaluation from 2004-2015. Conditional logistic regression was used for both univariate and multivariate analyses. Two sample T test with equal varia was used to compare cases and controls. All analyses was done using STATA 3 software.
Employees in the manufacturing factory are at risk for noise induced hearing loss, since most departments are above the allowable noise exposure of the Occupational Safety and Health Administration (OSHA). The incidence ratio of noise induced hearing loss is 5% which is lower than other published studies.
More employees used hearing protective devices regularly (78%) which may have contributed to the low incidence of hearing loss. There is significant difference between the hearing thresholds of the cases and controls such that most cases had mild unilateral hearing loss. Male gender and the history of adult ear infection are risk factors for noise induced hearing loss. Age and other medical comorbidities were not statistically significant risk factors.
The hearing conservation program of the manufacturing company has been effective in reducing the incidence of noise induced hearing loss. Males and those with a history of ear infections are more prone to develop noise induced hearing loss.
- To determine the incidence proportion of NIHL among employees of a manufacturing company over 10 years
- To determine factors that may be associated with noise-induced hearing loss in a manufacturing company
- To determine the effectiveness of hearing conservation program at a manufacturing company
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Cesar Anthony Yabut (Author,Co-Author), St. Elizabeth Hospital, Gen Santos Doctors' Hospital, Mindanao Medical Center, Howard Hubbard Memorial Center, Renato Diagan Memorial Hospital, capyabut@yahoo.com;
Consultant for Hearing Conservation Programs:
Dole Philippines, Inc. , Monsanto Philippines., Southern Philippines Power Corp., General Santos City Air Transportation Office, Pioneer Hi-Bred Seeds Corp., Coca-Cola Bottling Plant (Gen. Santos City), Philippine Airlines (GSC), RD Fishing Industries Inc.
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ASHA DISCLOSURE:
Financial -
Nonfinancial -
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AAA DISCLOSURE:
Financial -
No relevant financial relationship exists.
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Erasmo Gonzalo Llanes (Co-Author), Philippine National Ear Institute, erisllanes@yahoo.com;
Associate Professor, Philippine National Ear Institute & Department of Otolaryngology, Philippine General Hospital
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ASHA DISCLOSURE:
Financial -
Nonfinancial -
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AAA DISCLOSURE:
Financial -
No relevant financial relationship exists.
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Rhodieleen Anne de la Cruz (POC,Primary Presenter,Author), Medicus Medical Center, rhodieleenanne@gmail.com;
Graduated Medicine from the University of the Philippines College of Medicine, 2012
Graduated Otorhinolaryngology Residency Philippine General Hospital, 2016
Consultant, Medicus Medical Center, St. Pauls Hospital, Western Visayas Medical Center
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ASHA DISCLOSURE:
Financial -
Nonfinancial -
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AAA DISCLOSURE:
Financial -
No relevant financial relationship exists.
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