Clin Exp Otorhinolaryngol.  2023 Feb;16(1):87-94. 10.21053/ceo.2022.01298.

Effect of Occupational Noise Exposure on the Prevalence of Benign Vocal Fold Lesions: A Nationwide Population-Based Study

• Kim JS
• Kim S
• Moon TH
• Park S
• Kim SH
• Kim S
• Lee DH
• Kim BG
• Chang KH
• Park JO

• KMID: 2539772
• DOI: http://doi.org/10.21053/ceo.2022.01298

Abstract

Objectives
. Voice abuse in noisy environments can result in voice disorders. However, insufficient studies have sought to differentiate vocal cord lesions through laryngoscopic examinations among workers in noisy environments. This study investigated the relationship between a history of noise exposure in the workplace and benign vocal fold lesions (BVFLs).
Methods
. We used Korea National Health and Nutrition Examination Survey data from 2010 to 2012. The chi-square test was used to compare characteristics between two groups according to the presence or absence of BVFLs. To investigate the association between BVFLs and noise exposure in the workplace, we calculated adjusted odds ratios and 95% confidence intervals (CIs) using multiple logistic regression analysis.
Results
. In total, 10,170 participants with available laryngoscopy results were enrolled. Smoking history, hypertension, diabetes, and exposure to noise for more than 3 months at the workplace were significantly more common in participants with BVFLs. After adjusting for age, sex, smoking, drinking, obesity, hypertension, diabetes, income, education, and occupation as confounders, we confirmed that BVFLs were 1.52 times more likely (95% CI, 1.157–1.990) to occur in individuals with occupational noise exposure.
Conclusion
. Working in a noisy environment could induce BVFLs in workers through voice abuse. Social recognition that a noisy environment is a risk factor for BVFLs needs to be improved, and preventive measures should be implemented.

Keyword

Noise; Occupational Exposure; Vocal Cords; Laryngeal Diseases; Voice Disorder

Figure

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  Fig. 1. Flowchart of the study. KNHANES, Korea National Health and Nutrition Examination Survey.

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  Fig. 2. Laryngoscopic findings of each vocal fold lesion and the prevalence of each disease per 100,000 workers exposed to noise in the workplace for more than 3 months.

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