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The national sheet metal worker asbestos disease screening program: radiologic findings.

Authors
Welch-LS; Michaels-D; Zoloth-SR; The National Sheet Metal Examination Group
Source
Am J Ind Med 1994 May; 25(5):635-648
NIOSHTIC No.
20041102
Abstract
This report presents data gathered from a series of asbestos disease screening examinations of 9,605 United States sheet metal workers who were first employed in the trade at least 20 years before the examination. The overall prevalence of asbestos-related radiographic changes was 31.1%: 18.8% had pleural abnormalities alone, 6.6% had parenchymal abnormalities (International Labour Office (ILO) score of 110 or higher) alone, and 5.1% had both. Among those with 40 years or more since entering the trade, 41 3% had radiographic signs of asbestos-related disease, 24.2% pleural alone, 7.7% parenchymal alone, and 9.6% both pleural and parenchymal abnormalities. After controlling for several surrogates for asbestos exposure level, cigarette smoking was found to increase risk of parenchymal, and more modestly, pleural abnormalities. Each packyear was associated with a 1% increased prevalence odds ratios for parenchymal abnormalities (ILO category 1 compared to category 0), and 0.4% increased prevalence odds ratios for pleural abnormalities. A history of shipyard employment also produced significantly increased prevalence odds ratios for each radiographic category. More that 90% of chest radiographs were classified by A or B readers; after adjustment for other risk factors, A readers were more likely to report parenchymal abnormalities of category I , but not more likely to report category 2 or pleural abnormalities, than B readers.
Keywords
Metal-workers; Asbestosis; Asbestos-dust; Asbestos-fibers; Radiodiagnosis; Radiographic-analysis; X-ray-equipment; Pleural-cavity; Respiratory-system-disorders; Pulmonary-system-disorders; Lung-disease; Lung-disorders; Medical-screening; Smoking; Cigarette-smoking; Risk-factors; Shipyard-workers; Chest-X-rays; Author Keywords: asbestosis; pleural abnormalities; parenchymal abnormalities; shipyard worker; cigarette smoking; B reader; sheet metal workers
CODEN
AJIMD8
Publication Date
19940501
Document Type
Journal Article
Fiscal Year
1994
NTIS Accession No.
NTIS Price
Issue of Publication
5
ISSN
0271-3586
NIOSH Division
DRDS
Source Name
American Journal of Industrial Medicine
State
DC; NY; LA; CA; WA; PA; MN; MA; VA; CT; OK; WV
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