Case-control study to investigate the association between indices of dust exposure and the development of radiologic pneumoconiosis
A case-control study on employees at an iron ore surface mining plant was undertaken to determine which indices of occupational dust exposure related most closely to radiologic categories for pneumoconiosis. Forty cases, with radiographs compatible with the ILO Categories for simple pneumoconiosis, were matched for age, smoking habit, and date of entry into the workforce with 80 control subjects whose radiographs were read as normal. The six indices of dust exposure were cumulative and peak respirable dust, quartz, and iron oxide. Both iron oxide indices were not significant at the 5% level for either ILO Category 1 or Categories 2,3. The association between dust composition and ILO radiologic category for simple pneumoconiosis was consistent, with respirable quartz being the best differentiating index between the case and control groups.
- Research Organization:
- Memorial Univ. of Newfoundland, St. John's (Canada)
- OSTI ID:
- 5284304
- Journal Information:
- Arch. Environ. Health; (United States), Journal Name: Arch. Environ. Health; (United States) Vol. 42:6; ISSN AEHLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560300* -- Chemicals Metabolism & Toxicology
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CHALCOGENIDES
CHEMICAL COMPOSITION
COHERENT SCATTERING
DIFFRACTION
DISEASES
DUSTS
EPIDEMIOLOGY
INHALATION
INTAKE
IRON COMPOUNDS
IRON OXIDES
MINERALS
MINING
OCCUPATIONAL EXPOSURE
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PERSONNEL
PNEUMOCONIOSES
QUARTZ
RESPIRATORY SYSTEM DISEASES
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
SURFACE MINING
TOXICITY
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION