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Original Article Prevalence of coal workers' pneumoconiosis in Kangreung and Taeback areas
Kyung Yong Rhee, Ho Keun Chung
Epidemiol Health 1988;10(2):195-203
DOI: https://doi.org/
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Authors surveyed prevalence rate of coal workers’ pneumoconiosis in coal miners in Kangreung and Taeback areas. Because of difference of working conditions including concentration and composition of coal dust in workplace between two areas, difference of prevalence rate between two areas will be expected. Sample size was 2,913 coal miners; 161 coal miners(6.2% of total coal miners in Kangreung area) in Kangreung area, and 2,752 coal miners(11.1% of total coal miners in Taeback area), selected randomly according to coal mining company by size of workers. Data was collected by record of regular health screening test in 1986, and chest x-ray films of all study subjects were read by one radiologist to eliminated inter-observer variation. There is no difference of prevalence of coal workers’ pneumoconiosis between two areas, respectively 18.5% in Taeback, 18.6% in Kangreung(including suspicious case) in spite of difference of working conditions, characteristics of coal miners. And there was correlation between employing year, migration history and prevalence rate of coal workers’ pneumoconiosis: prevalence rate in longer employing coal miners was higher than that in shorter employing coal miners(under 1 year: 4.6%, 1-5 year: 7.2%, 5-10 years: 19.7%, 10 year and over: 43.9%), and that of migratory coal miners higher than that of non-migratory coal miners(non-migratory: 17.2%, migratory: 25%).


Epidemiol Health : Epidemiology and Health