Risk of XXXX in pneumoconiotic coal miners and the effect of @entity1576 .

@entity3673 @entity5047 @entity358 @entity1576 @entity204 @entity356
OBJECTIVES: This study was carried out to investigate the mortality patterns in a group of 3790 coal miners. The study population had abnormal chest x ray films at a routine medical examination that was performed in the 1950s. METHODS: The total group of 3790 coal miners were followed up for mortality up to 1 January 1992. Causes of @entity204 , determined and coded at time of @entity204 , were traced with help from the Central Bureau of Statistics. RESULTS: Total mortality in this group of coal miners with abnormal chest x ray films was significantly higher than expected ( @entity5047 127.1, 95% CI 122.5-131.6), mainly a reflection of the increase in mortality from non-malignant @entity1576 ( @entity5047 411.0, 95% CI 382.3-441.3). Mortality from @entity356 was also significantly increased ( @entity5047 147.5, 95% CI 122.3-176.3). This risk of mortality from @entity356 was confined to workers with no @entity3673 or only a mild form. Despite the strong relation to duration of employment and @entity3673 the group of workers with more severe manifestations of @entity3673 did not experience an excess in mortality from @entity356 . CONCLUSION: This study confirms the earlier reported risk of @entity356 in coal miners. Also it confirms the hypothesis that this risk of @entity356 is limited to workers with a mild degree of @entity3673 or none. In workers with severe forms of @entity3673 the @entity358 is impaired in such a way that the inhaled coal dust does not reach the digestive tract.
