Occupational noise induced hearing loss in coal miners and coal washing factory workers in Kerman province
Introduction: The occupational noise induced hearing loss is one of the wide spread problems and a long term complication of working in noisy environments. At the present, large groups of workers who are working in noisy environments are exposed to hearing loss. So, this study is aimed to determine the prevalence of hearing loss (more than, 25 dB) of the workers in coal mines and leaching factories in Kerman state. Methods: In this descriptive study, a sample of 150 workers from coal mines was selected using proportional stratified random sampling method. Based on results of first audiometry, individuals with hearing loss, history of diseases that cause hearing loss, more than 60 years old age and less than 5 years working history in a mine factory were excluded from the study. Data collection was performed using a check list including some personal and job characteristics and results of the first audiometry. In addition, audiometry was done for all of subjects. The results were presented using descriptive statistics. Results: Based on the audiometry results, maximum percent of hearing loss was related to 4000 Hz frequency and then 8000 and 2000 frequencies. Totally, in bone conduction 16% of workers were two-sided hearing handicapped. 16.7% of the workers had right ear hearing reduction, 19.3% left ear and 8% of them had air and bone conduction disability. Conclusion: According to this study, the workers are seriously exposed to risk of hearing problems due to insufficient education about hearing loss and lack of annual audiometry. So, designing some programs in order to reduce hearing loss should be considered
OBJECTIVES Most workers in auto part factories in Thailand are usually exposed to excessive noise in their workplace. This study aimed to assess the level of occupational noise-induced hearing loss and investigate risk factors causing hearing loss in auto part factory workers in the welding units in Thailand. METHODS This was a cross-sectional study. One hundred eighty subjects were recruited...متن کامل
Using the extended parallel process model to prevent noise-induced hearing loss among coal miners in Appalachia.
Occupational noise-induced hearing loss is the second most self-reported occupational illness or injury in the United States. Among coal miners, more than 90% of the population reports a hearing deficit by age 55. In this formative evaluation, focus groups were conducted with coal miners in Appalachia to ascertain whether miners perceive hearing loss as a major health risk and if so, what would...متن کامل
Combined effect of smoking and occupational exposure to noise on hearing loss in steel factory workers.
BACKGROUND Evidence has accumulated concerning the adverse effects of smoking on hearing acuity, but it is not clear whether smoking modifies the association between exposure to noise and hearing loss. AIMS To examine the synergistic effect of these variables on hearing. METHODS Data used were derived from periodic health examinations for 4624 steel company workers in Japan and included aud...متن کامل
IRVINE, L. G., SIMSON, F. W., and STRACHAN, A. S. (1930), Proc. Intern. Conf. on Silicosis in Johannesburg, I.L.O. Studies and Reports, Series F. (Industrial Hygiene), No. I3, p. 259. JONES, W. R. (I933), ,. of Hyg., 33, 307. KETTLE, E. H. (I932), Y. Path. and Bat., 35, 395. KETTLE, E. H. (I934), Ibid., 38, 20o. KING, E. J. (I945), M.R.C. Special Report Series, No. 250, p. 73. KING, E. J. (I947...متن کامل
Noise is the insidious of all industrial pollutants, involving every industry and causing severe hearing loss in every country in the world. Exposure to excessive noise is the major avoidable cause of permanent hearing impairment. Worldwide, 16% of the disabling hearing loss in adults is attributed to occupational noise, ranging from 7 to 21% in the various subregions. The estimated cost of noi...متن کامل
In a study of coal-miners suffering from lung cancer two features of special interest are recorded. The difficulties in diagnosis are illustrated by case reports. The two-year survival rate after surgical removal of the tumour is significantly better in coal-miners than in non-miners. After operation 87% of coal-miners were alive two years later, compared with only 36% of other patients operate...متن کامل
دوره 9 شماره None
صفحات 271- 278
تاریخ انتشار 2006-01
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