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| Influencing factors for high-frequency hearing loss among noise-exposed workers in Huzhou City |
| ZHOU Yi, ZHANG Qi, LIU Tao
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| Huzhou Center for Disease Control and Prevention (Huzhou Institute of Public Health Supervision),Huzhou, Zhejiang 313000, China |
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Abstract Objective To investigate the prevalence of high-frequency hearing loss and analyze its influencing factors among noise-exposed workers in Huzhou City, Zhejiang Province, so as to provide evidence for effective prevention and control of occupational noise hazards. Methods Individual case data of in-service noise-exposed workers undergoing occupational health examinations in Huzhou City in 2023 were collected through the Occupational Disease and Health Hazard Factors Monitoring Information System of the China Disease Prevention and Control Information System. Data included gender, age, and results of binaural high-frequency average hearing threshold. High-frequency hearing loss was defined as binaural high-frequency average hearing threshold (at 3 000, 4 000, and 6 000 Hz) ≥40 dB. Multivariable logistic regression model was used to analyze influencing factors for high-frequency hearing loss among noise-exposed workers. Results A total of 73 550 noise-exposed workers were included, of whom 54 610 (74.25%) were males and 18 940 (25.75%) were females. The median age was 44.04 (interquartile range, 0.16) years. The median length of service was 5.38 (interquartile range, 0.07) years. A total of 7 556 cases of high-frequency hearing loss were identified, with a detection rate of 10.27%. Multivariable logistic regression analysis showed that gender (male, OR=2.541, 95%CI: 2.370-2.724), length of service (6-<10 years, OR=1.208, 95%CI: 1.135-1.285; ≥10 years, OR=1.351, 95%CI: 1.266-1.441), region (Nanxun District, OR=2.069, 95%CI: 1.903-2.249; Deqing County, OR=1.558, 95%CI: 1.450-1.673; Changxing County, OR=1.439, 95%CI: 1.349-1.534; Anji County, OR=1.214, 95%CI: 1.120-1.316), enterprise scale (large, OR=0.485, 95%CI: 0.416-0.565; medium, OR=0.440, 95%CI: 0.381-0.509; small, OR=0.608, 95%CI: 0.530-0.698), industry category (manufacturing, OR=1.088, 95%CI: 1.025-1.155), and economic type (private/other, OR=1.555, 95%CI: 1.174-2.059) were influencing factors for high-frequency hearing loss among noise-exposed workers. Conclusions The detection rate of high-frequency hearing loss among noise-exposed workers in Huzhou City is relatively high, and is associated with gender, length of service, region, enterprise scale, industry category, and economic type. Strengthened occupational health monitoring and individual protection are warranted.
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Received: 16 January 2026
Revised: 14 March 2026
Published: 21 April 2026
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