Epidemiology of Occupational Noise Exposure Level in the Industries of Bhutan

Dendup, Phuntsho; Sonam, Tenzin; Penpa,

doi:10.24321/2455.7048.201902

Cited by 2 publications

(3 citation statements)

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“…Workers in wood base industry, polymer and Hydro power plant services have higher risk of accruing ONIHL compared to other industries. The finding of this study is coherent with the study conducted on epidemiology of occupational noise exposure level in the industries of Bhutan where it was found that level of noise in wood base and polymer industry are very high 11 . This study found that prevalence of ONIHL is higher among the older age groups.…”

Section: Discussionsupporting

confidence: 90%

“…Occupational noise exposure in Bhutan was found more prevalent in manufacturing industries which was recorded at an average of 88.6dB(A) with a maximum of 102.5dB(A) and Minimum of 76.8dB(A). Same study showed that 43.5% of workers being exposed to noise level exceeding 91dBA for 8 hours a day contributes to higher risk of acquiring hearing loss 11 . However, there is limited or no information on the Occupational Noise Induced Hearing Loss in Bhutan.…”

Section: Original Articlementioning

confidence: 93%

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Prevalence of Occupational noise induced hearing loss (ONIHL) among industrial workers in Bhutan.

Wangchuk¹,

Dendup

2020

Bhutan Health Journal

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Introduction: Exposure to any type of noise has a potential risk. Higher the level of noise and longer duration of exposure, the more the risk for the hearing sensitivity and health as a whole. The objective of the study is to determine the prevalence of Occupational Noise Induced Hearing Loss (ONIHL) among the industrial workers in Bhutan and to ascertain high risk establishment and vulnerable occupations. Methods: The hearing assessment was conducted among 1638 workers considering different types of industries and occupations to ascertain the prevalence of occupational noise induced hearing loss and vulnerable group amongdifferent industries and occupations. Descriptive statistics and binary logistic regression were performed to test the significance of ONIHL among the various independent variables. Results: The study found that the prevalence of ONIHL stands at 27.9% among industrial workers in Bhutan. 42.45% of candidates who had ONIHL reported with tinnitus in either or both ears. This study founda significant association between the exposure duration and the severity of ONIHL among the industrial workers. Considering the type of industry, wood based industry, hydro services, cement and polymer were found to have a higher prevalence of ONIHL and similarly, higher prevalence of ONIHL were found among occupations such as blaster, chipper, carpenters, dryer (knife grinder) and crusher operators. Conclusions: This study conduces that prevalence of ONIHL among industrial workers is found to be at the higher side and some of the occupations and industries impose higher risk. The study suggests that there is need for intervention such as strict enforcement of the permissible exposure limit, monitor and evaluate hearing conservation programs, and providing advice and recommendation to address such issues by the relevant agencies and industries

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Section: Discussionsupporting

confidence: 90%

Section: Original Articlementioning

confidence: 93%

Prevalence of Occupational noise induced hearing loss (ONIHL) among industrial workers in Bhutan.

Wangchuk¹,

Dendup

2020

Bhutan Health Journal

Self Cite

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“…Apart from noise emitted from manufacturing and agriculture industries, lack of awareness among the workers and health professionals contributes to higher prevalence of NIHL in Asia 9 . Same study showed that 43.5% of workers being exposed to noise level exceeding 91dBA for 8 hours a day contributes to higher risk of acquiring hearing loss 6,10…”

Section: Introductionmentioning

confidence: 97%

Prevalence of Hearing Loss among Noise Exposed Industrial Workers

Rahman,

Biswas,

Alam

et al. 2023

Bangabandhu Sheikh Mujib Medical Coll J

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Exposure to any type of noise has a potential risk. Higher the level of noise and longer duration of exposure, more the risk for hearing sensitivity and health as a whole. Occupational noise induced hearing loss (ONIHL) is a major cause of disability throughout the world. So this study was designed to know the prevalence of NIHL among the noise exposed industrial workers in Bangladesh. A prospective observational study of 377 People working at industrial environment in Jute mills at Faridpur region were studied between January 2021 to June 2021. Data collected from each respondent recorded on a predesigned data collection form. Pure tone audiometry was performed in both ears. Among 377 study population, 157(41.6%) subjects had hearing loss and 220 subjects (58.4%) had no loss. Among the workers with hearing loss, 98(62.4%) got hearing loss on both sides, 32(20.4%) on the right side and 27(17.2%) on the left side. Among them 83(52.9%) had mild hearing loss, 37(23.6%) had moderate hearing loss, 31(19.7%) had severe hearing loss and 6(3.8%) had profound hearing loss. The average duration of work in the industry was 6.94±5.64 years and majority (78.5%) had 8 hours working hour per day and 21.5% had more than 8 hours. The average sound intensity was 91.51±8.12 dB(A) with 10.9% exposed to <_85 dB(A) and 89.1% to >85 dB(A). This study shows Noise-induced hearing loss (NIHL)as highly prevalent among noise-exposed workers in Bangladesh. Age >35 years, high noise level, exposure of more than 10 years, were significantly associated with increased risk of hearing loss. The local and national authority should focus on noise monitoring, engineering modifications of buildings and machinery, occupational safety policies, administrative controls, providing education on NIHL, periodic audiometric assessments and follow-up evaluation for hearing threshold shift. This study supported the elements for further research studies related to the employer compliance with occupational health and safety regulations to address awareness of their responsibility in minimizing hazards in workplaces. Bangabandhu Sheikh Mujib Med. Coll. J. 2022;1(1):90-95

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Epidemiology of Occupational Noise Exposure Level in the Industries of Bhutan

Cited by 2 publications

References 1 publication

Prevalence of Occupational noise induced hearing loss (ONIHL) among industrial workers in Bhutan.

Prevalence of Occupational noise induced hearing loss (ONIHL) among industrial workers in Bhutan.

Prevalence of Hearing Loss among Noise Exposed Industrial Workers

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