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KMID : 0365819910310020047
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Journal of Pusan Medical College
1991 Volume.31 No. 2 p.47 ~ p.55
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A Study on the Influence of the Risk Factors in Noise Induced Hearing Loss in the Industial Workers
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Abstract
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A detailed analysis of risk factors for the development of noise induced hearing loss was carried out in 187 noise exposed workers.
The hearing threshold of both ears at 4000Hz was measured, and the effect of age, duration of noise exposure, blood pressure, cigarette smoking, serum cholesterol and serum triglyceride was evaluated by correlation analysis.
The obtained reults were as follows
1. The levels of hearing loss by frequency showed the characteristic Cs-dip phenomenon in audiogram and mean levels of hearing loss by frequency was 28.9± 6.8dB.
2. Mean levels of hearing loss by age was inclined to increase in proportion to it, but there was no statistical significance.
3. Mean levels of hearing loss by careers was inclined to increase in proportion to it (p<0.01).
4. The levels of hearing loss showed increasing tendency in proportion to serum total cholesterol concentrations, but there was no statistical significance. The levels of hearing loss decreased significantly as serum triglyceride concentration increased
5. Career of noise exposure and cigarette smoking habits correlated significantly with noise induced hearing loss but serum triglyceride concentration had a negative correlation with noise induced hearing loss(p<0.01).
6. Age, systolic and diastolic blood pressure and serum total cholesterol concentration did not significantly contribute to the noise induced hearing loss.
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