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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Occup+Environ+Med
2014 ; 71
(10
): 690-4
Nephropedia Template TP
gab.com Text
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English Wikipedia
Small mine size is associated with lung function abnormality and pneumoconiosis
among underground coal miners in Kentucky, Virginia and West Virginia
#MMPMID25052085
Blackley DJ
; Halldin CN
; Wang ML
; Laney AS
Occup Environ Med
2014[Oct]; 71
(10
): 690-4
PMID25052085
show ga
OBJECTIVES: To describe the prevalence of lung function abnormality and coal
workers' pneumoconiosis (CWP) by mine size among underground coal miners in
Kentucky, Virginia and West Virginia. METHODS: During 2005-2012, 4491 miners
completed spirometry and chest radiography as part of a health surveillance
programme. Spirometry was interpreted according to American Thoracic Society and
European Respiratory Society guidelines, and radiography per International Labour
Office standards. Prevalence ratios (PR) were calculated for abnormal spirometry
(obstructive, restrictive or mixed pattern using lower limits of normal derived
from National Health and Nutrition Examination Survey (NHANES) III) and CWP among
workers from small mines (?50 miners) compared with those from large mines.
RESULTS: Among 3771 eligible miners, those from small mines were more likely to
have abnormal spirometry (18.5% vs 13.8%, p<0.01), CWP (10.8% vs 5.2%, p<0.01)
and progressive massive fibrosis (2.4% vs 1.1%, p<0.01). In regression analysis,
working in a small mine was associated with 37% higher prevalence of abnormal
spirometry (PR 1.37, 95% CI 1.16 to 1.61) and 2.1 times higher prevalence of CWP
(95% CI 1.68 to 2.70). CONCLUSIONS: More than one in four of these miners had
evidence of CWP, abnormal lung function or both. Although 96% of miners in the
study have worked exclusively under dust regulations implemented following the
1969 Federal Coal Mine Safety and Health Act, we observed high rates of
respiratory disease including severe cases. The current approach to dust control
and provision of safe work conditions for central Appalachian underground coal
miners is not adequate to protect them from adverse respiratory health effects.