Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Temporal trends in coal workers' pneumoconiosis prevalence. Validating the national coal study results.

Authors
Goodwin-S; Attfield-M
Source
J Occup Environ Med 1998 Dec 40(12):1065-1071
NIOSHTIC No.
20023507
Abstract
Evidence from four successive rounds of the National Study of Coal Workers' Pneumoconiosis indicates diminishing prevalence of coal workers' pneumoconiosis (CWP) from 1969 to 1988. However, methodological inconsistencies across surveys have raised concerns. This study confirms the reported downward trend in CWP prevalence, utilizing a standardized methodological approach. A single team of three x-ray readers using the 1980 International Labour Office classification independently re-evaluated 3143 Appalachian-region cases to derive overall, tenure- and age-specific prevalences. Prevalence of small rounded opacities declined, with 12.7% in Round 1, 11.2% in Round 2, 3.0% in Round 3, and 3.9% in Round 4. These findings support the National Institute for Occupational Safety and Health's recommendation of a reduced exposure limit of 1 mg/m3 because the present coal dust standard does not sufficiently protect miners against adverse health effects over a working lifetime of exposures.
Keywords
Coal-workers-pneumoconiosis; Coal-miners; Pneumoconiosis; X-ray-analysis; Coal-dust; Coal-workers; Statistical-analysis; Respiratory-system-disorders; Pulmonary-system-disorders
Contact
Michael Attfield, PhD, Division of Respiratory Disease Studies, NIOSH, 1095 Willowdale Road, Morgantown, WV 26505
CODEN
JOEMFM
Publication Date
19981201
Document Type
Journal Article
Fiscal Year
1999
NTIS Accession No.
NTIS Price
Issue of Publication
12
ISSN
1076-2752
NIOSH Division
DRDS
Source Name
Journal of Occupational and Environmental Medicine
State
WV
TOP