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International Journal of Occupational Hygiene، جلد ۸، شماره ۳، صفحات ۱۷۲-۱۷۸
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عنوان انگلیسی The Time of Hearing Loss Onset among Workers in the Copper by-Industry and its Effective Factors
چکیده انگلیسی مقاله ORIGINAL ARTICLE Extended exposure to noise can cause permanent hearing damage. This study aimed to determine the incidence time of hearing loss and its effective factors in workers exposed to noise. This retrospective cohort study, was conducted on a total of 273 workers in various sectors of Kerman Copper by-industries Co. Their hearing status and the incidence of hearing loss (hearing threshold higher than 25 dB) were measured at regular intervals through audiographs. Survival analysis was done using the Kaplan-Meier method and Cox Regression analysis through STATA 12. The time range (from the onset of the risk to the incidence of hearing loss) was between 8 to 14 years. Systolic blood pressure alone and in interaction with years of employment was significantly related to the incidence of hearing loss at all frequencies. Initial hearing threshold and age at employment also had a significant impact on the onset time of hearing loss. The interaction between age at employment×initial hearing threshold; and years of employment×age at employment; in both low and high frequencies had a significant impact on the incidence time of hearing loss. Despite the availability of protective equipment in this industry, hearing loss occurred in at least half of the workers after about 10 years. High systolic blood pressure, age at employment, and initial hearing thresholds probably play a role in the incidence time of hearing loss.
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نویسندگان مقاله فاطمه خالداری | fatemeh khaldari
msc student, department of biostatistics and epidemiology, faculty of health, kerman university of medical sciences, kerman, iran;

سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (Kerman university of medical sciences)

نرگس خانجانی | narges khanjani
associate professor, environmental health engineering research center, kerman university of medical sciences, kerman, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (Kerman university of medical sciences)

عباس بهرامپور | abbas bahrampour
professor, department of biostatistics and epidemiology, faculty of health, kerman university of medical sciences, kerman, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (Kerman university of medical sciences)

محمد رضا قطبی راوندی | mohammad reza ghotbi ravandi
assistant professor, department of occupational health, faculty of health, kerman university of medical sciences, kerman, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (Kerman university of medical sciences)

علی علی اصغر عربی میانرودی | ali ali asghar arabi mianroodi
assistant professor, department of ear, nose and throat, faculty of medicine, kerman university of medical sciences, kerman, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (Kerman university of medical sciences)

نشانی اینترنتی http://ijoh.tums.ac.ir/index.php/ijoh/article/view/241
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/190/article-190-351070.pdf
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article(s)
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