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Mortality among U.S. underground coal miners: a 23-year follow-up.

Authors
Attfield-MD; Kuempel-ED
Source
Am J Ind Med 2008 Apr; 51(4):231-245
NIOSHTIC No.
20033539
Abstract
Background: the mortality experience over 22-24 years of 8,899 working coal miners initially medically examined in 1969-1971 at 31 U.S. coal mines was evaluated. Methods: a cohort life-table analysis was undertaken on underlying causes of death, and proportional hazards models were fitted to both underlying, and underlying and contributing causes of death. Results: elevated mortality from nonviolent causes, nonmalignant respiratory disease (NMRD), and accidents was observed, but lung cancer and stomach cancer mortality were not elevated. Smoking, pneumoconiosis, coal rank region, and cumulative coal mine dust exposure were all predictors of mortality from nonviolent causes and NMRD. Mortality from nonviolent causes and NMRD was related to dust exposure within the complete cohort and also for the never smoker subgroup. Dust exposure relative risks for mortality were similar for pneumoconiosis, NMRD, and chronic airways obstruction. Conclusions: the findings confirm and enlarge upon previous results showing that exposure to coal mine dust leads to increased mortality, even in the absence of smoking.
Keywords
Coal-workers; Coal-workers-pneumoconiosis; Coal-dust; Coal-miners; Coal-mining; Quantitative-analysis; Morbidity-rates; Occupational-exposure; Mortality-rates; Mortality-data; Dust-exposure; Airborne-particles; Breathing; Respiratory-system-disorders; Surveillance; Author Keywords: coal; mortality; pneumoconiosis; dust; exposure-response
Contact
M.D. Attfield, Division of Respiratory Disease Studies, NIOSH, 1095 Willowdale Road, Morgantown, WV, 26505
CODEN
AJIMD8
Publication Date
20080401
Document Type
Journal Article
Email Address
mdal@cdc.gov
Fiscal Year
2008
NTIS Accession No.
NTIS Price
Issue of Publication
4
ISSN
0271-3586
NIOSH Division
DRDS; EID
Source Name
American Journal of Industrial Medicine
State
WV
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