The association of daily cardiac and respiratory admissions to 168 acute care hospitals in Ontario, Canada, with daily levels of particulate sulfates was examined over the 6-year period 1983-1988.
Sulfate levels were recorded at nine monitoring stations in regions of southern and central Ontario spanned by three monitoring networks.
A 13-mug/m3 increase in sulfates recorded on the day prior to admission (the 95th percentile) was associated with a 3.7% (p<0.0001) increase in respiratory admissions and a 2.8% (p<0.0001) increase in cardiac admissions.
Increases were observed for all age groups examined.
Admissions for cardiac diseases increased 2.5% for those under 65 years and 3.5% for those 65 years and older.
After adjusting for ambient temperature and ozone, similar increases in respiratory admissions were observed in the period from April to September (3.2%) and in the period from October to March (2.8%). A 3.2% increase was observed for cardiac admissions in the period from April to September, and a 3.4% increase was observed in the period from October to March after adjusting for ambient temperature and ozone.
Am J Epidemiol 1995 ; 142 : 15-22.
Mots-clés Pascal : Sulfate, Pollution air, Toxicité, Appareil circulatoire pathologie, Appareil respiratoire pathologie, Homme, Epidémiologie, Admission hôpital, Ontario, Canada, Amérique du Nord, Amérique
Mots-clés Pascal anglais : Sulfates, Air pollution, Toxicity, Cardiovascular disease, Respiratory disease, Human, Epidemiology, Hospital admission, Ontario, Canada, North America, America
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0438744
Code Inist : 002B03M02. Création : 01/03/1996.