To evaluate the risk of pneumoconiosis among workers in a Midwestern automotive foundry, medical records and silica sand exposure data were analyzed for 1,072 current and retired employees with at least 5 years of employment as of June 1991.
Approximately half of these employees had worked at the foundry for 20 or more years.
Sixty workers were found to have radiographic evidence of pneumoconiosis.
Twenty-eight workers had radiographs consistent with silicosis, of which 25 were consistent with simple silicosis and three with progressive massive fibrosis.
The prevalence of radiographic changes consistent with silicosis increased with :
number of years worked at the foundry (6% for 20-29 years and 12% for 30 or more years) ;
cigarette smoking (12.2% among smokers with high silica exposure vs. 4.4% among never smokers with high silica exposure) ;
work area within the foundry (cleaning room, core room, mold area, core knockout) ;
and quantitative silica exposure (0.3-2.7% of workers at the current Occupational Safety and Health Administration (OSHA) standard and 4.9-9.9% of workers above the OSHA standard).
In addition, the odds of developing radiographic changes consistent with silicosis were increased for African Americans (odds ratio=2.14,95% confidence interval 0.85-5.60) in comparison with whites. (...)
Mots-clés Pascal : Silicose, Exposition professionnelle, Fonderie, Industrie automobile, Homme, Epidémiologie, Teneur air ambiant, Concentration maximale admissible, Silice, Médecine travail, Etats Unis, Amérique du Nord, Amérique, Exploration radiologique, Appareil respiratoire pathologie, Poumon pathologie, Pneumoconiose, Maladie professionnelle
Mots-clés Pascal anglais : Silicosis, Occupational exposure, Foundry, Automobile industry, Human, Epidemiology, Ambient air concentration, Maximum permissible concentration, Silica, Occupational medicine, United States, North America, America, Radiologic investigation, Respiratory disease, Lung disease, Pneumoconiosis, Occupational disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0499081
Code Inist : 002B03L03. Création : 10/04/1997.