Hearing threshold levels of Australian coal mine workers: a retrospective cross-sectional study of 64196 audiograms

2021 ◽  
pp. 1-12
Author(s):  
Adelle Liebenberg ◽  
Alan M. Brichta ◽  
Valerie M. Nie ◽  
Sima Ahmadi ◽  
Carole L. James
Keyword(s):  
Coal Mine ◽  
Hearing Threshold ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Threshold Levels ◽  
Australian Coal ◽  
Mine Workers

scholarly journals Hearing threshold levels and hearing loss among people in Zhejiang, China: a population-based cross-sectional study

BMJ Open ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. e027152 ◽  
Author(s):  
Dahui Wang ◽  
Huai Zhang ◽  
Haiyan Ma ◽  
Long Zhang ◽  
Lei Yang ◽  
...  
Keyword(s):  
Hearing Loss ◽  
High Frequency ◽  
Age Groups ◽  
Hearing Threshold ◽  
Population Based ◽  
Cross Sectional Study ◽  
Zhejiang Province ◽  
Sectional Study ◽  
Cross Sectional ◽  
High Frequency Hearing Loss

Hearing loss (≥26 dB threshold in the better ear), as a common chronic condition in humans, is increasingly gaining attention. Relevant research in China is relatively scarce, so we conduct a population-based study to investigate the prevalence of hearing loss among age groups, genders and ears in Zhejiang province, China, from September 2016 to June 2018.Study designPopulation-based cross-sectional studyParticipantsA total of 3754 participants aged 18–98 years and living in Zhejiang province, China.Outcome measuresPure-tone audiometric thresholds were measured at frequencies of 0.125–8 kHz for each subject. All participants were asked to complete a structured questionnaire, in the presence of a healthcare official.ResultsThe prevalence of speech-frequency and high-frequency hearing loss was 27.9% and 42.9%, respectively, in Zhejiang. There were significant differences in auditory thresholds at most frequencies among the age groups, genders (male vs female: 31.6%vs24.1% at speech frequency; 48.9% vs 36.8% at high frequency) and ears. In addition to the common factors affecting both types of hearing loss, a significant correlation was found between personal income and speech-frequency hearing loss (OR=0.69, 95% CI 0.52 to 0.92), and between hyperlipidaemia and high-frequency hearing loss (OR=1.45, 95% CI 1.02 to 2.07).ConclusionThe prevalence of hearing loss was high among people living in Zhejiang, particularly males, and in the left ear. Moreover, hearing thresholds increased with age. Several lifestyle and environment factors, which can be influenced by awareness and education, were significantly associated with hearing loss.

scholarly journals Oculo-Visual Findings among Industrial Mine Workers at Goldfields Ghana Limited, Tarkwa

2012 ◽  
Vol 4 ◽  
pp. OED.S9204 ◽  
Author(s):  
GO Ovenseri-Ogbomo ◽  
S Ocansey ◽  
EK Abu ◽  
S Kyei ◽  
SB Boadi-Kusi
Keyword(s):  
Visual Impairment ◽  
Demographic Data ◽  
Cross Sectional Study ◽  
Eye Diseases ◽  
Sectional Study ◽  
Cross Sectional ◽  
Visual Status ◽  
Study Population ◽  
The Mean ◽  
Mine Workers

Objective The focus of this study was to evaluate the visual status of mine workers who were directly involved in mining and/or are exposed to the mining environment. Methods A hospital based cross-sectional study was conducted. Four hundred and six (406) workers were conveniently sampled for the study. Information on their socio-demographic data was also collected. In addition, all participants underwent ophthalmic examination. Results The mean age of the workers was 41.1 years. Visual impairment was found in 114 (28.1%) of the study population of which refractive error (56.8%) was the major cause. Presbyopia was also observed in 45.5% of the workers with only 30.3% of them wearing near correction. The prevalence of eye diseases were pterygium/pingueculae (25.8%), conjunctivitis (26.8%), suspected glaucoma (15.3%), and cataract (7.4%). Conclusions Visual impairment and eye diseases were found among the miners.

scholarly journals Silico-tuberculosis, silicosis and other respiratory morbidities among sandstone mine workers in Rajasthan- a cross-sectional study

PLoS ONE ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. e0230574 ◽  
Author(s):  
Saranya Rajavel ◽  
Pankaja Raghav ◽  
Manoj Kumar Gupta ◽  
Venkiteswaran Muralidhar
Keyword(s):  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Mine Workers

scholarly journals Noise Exposure and Hearing Capabilities of Quarry Workers in Ghana: A Cross-Sectional Study

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Charles Kwame R. Gyamfi ◽  
Isaac Amankwaa ◽  
Frank Owusu Sekyere ◽  
Daniel Boateng
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Hearing Threshold ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Ashanti Region ◽  
Economic Significance ◽  
Extent Of Damage ◽  
Excessive Noise

Introduction.Although quarry operations have high economic significance, the effects they cause to the workers in terms of excessive noise production cannot be overlooked. This cross-sectional study assessed the extent of noise exposure and its influence on hearing capabilities among quarry workers in Ashanti region.Methods. The study involved 400 workers randomly selected from five quarries in Ashanti region from April to June 2012. Data was collected using structured questionnaires, physical examination, and audiological assessments. A logistic regression model was fitted to assess independent predictors of hearing loss.Results. All the machines used at the various quarries produced noise that exceeded the minimum threshold with levels ranging from 85.5 dBA to 102.7 dBA. 176 (44%) of study respondents had hearing threshold higher than 25 dBA. 18% and 2% of these were moderately (41–55 dBA) and severely (71–90 dBA) impaired, respectively. Age, duration of work, and use of earplugs independently predicted the development of hearing loss. Use of earplugs showed a protective effect on the development of hearing loss (OR = 0.45; 95% CI = 0.25, 0.84).Conclusion.This study provides empirical evidence on the extent of damage caused to quarry workers as a result of excessive noise exposure. This will support the institution of appropriate protective measures to minimize this threat.

A Cross-Sectional Study on the Hearing Threshold Levels Among People in Qinling, Qinghai, and Nanjing, China

2018 ◽  
Vol 27 (1) ◽  
pp. 147-155 ◽  
Author(s):  
Junguo Wang ◽  
Xiaoyun Qian ◽  
Jie Chen ◽  
Ye Yang ◽  
Xia Gao
Keyword(s):  
Age Groups ◽  
Hearing Threshold ◽  
Sampling Technique ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Systematic Random Sampling ◽  
Auditory Thresholds ◽  
Threshold Levels ◽  
Hearing Ability ◽  
Hearing Thresholds

Purpose This study aimed to investigate the hearing threshold among different age groups, genders, and geographic areas in China to provide some insight into the appropriate clinical interventions for hearing loss. Method Using a systematic random sampling technique, 562 participants from Qinling, Qinghai, and Nanjing were included. Participants in the same area were divided into 3 groups according to their age. Pure-tone audiometric thresholds were measured at octave and interoctave frequencies of 0.125–16 kHz for each subject. Results There were significant differences in auditory thresholds at nearly all frequencies among young, middle-aged, and elderly people, and hearing thresholds increased with increasing age. People generally had the best hearing ability in Nanjing, better hearing ability in Qinghai, and the worst hearing ability in Qinling. Significant differences in hearing thresholds were found between males and females at several frequencies in Qinling. Conclusion People living in the rural area of Qinling in China had higher hearing threshold levels, particularly males, and hearing thresholds increased with age.

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