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KMID : 0895420100200020094
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Journal of Korean Society of Occupational and Enviromental Hygiene
2010 Volume.20 No. 2 p.94 ~ p.101
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Asymmetrical Hearing Loss and Related Factors Among the Noise Exposed Male Workers
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Lee Nam-Soo
Lee Kyung-Jae
Kim Joo-Ja
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Abstract
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This study was performed to examine the asymmetry of hearing loss among the noise exposed male workers. Findings of otoscopic examination, pure tone audiometry and tympanometry were evaluated for 179 male workers working in the noise exposed workplace. And also self-administered structured questionnaires were used for each worker’s work-related and general characteristics including personal health behaviors. There were significant differences of hearing threshold between right and left ears at 1,000 Hz and 3,000 Hz(p<0.05). And also significant differences of hearing threshold were noted in the age group over 50 at 3,000 Hz, the high risk drinking group either at 3,000 Hz and 4,000 Hz, the work duration group 10-19 years at 3,000 Hz, the noise exposure group under 90dB(A) at 3,000 Hz, the noise exposure group over 90 dB(A) at 1,000 Hz, the non-wearing protective device group at 4,000 Hz, and the wearing protective device group at 3,000 Hz(p<0.05). Further study is needed to explore the extent and the related factors of the asymmetry of hearing loss in the general population and occupationally noise exposed group.
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KEYWORD
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Asymmetrical hearing Loss, Noise induced hearing Loss, Health behavior
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