We obtained data on daily numbers of admissions to hospital in Toronto, Canada, from 1980
to 1994 for respiratory, cardiac, cerebral vascular, and peripheral vascular diseases. We …

In order to address the role that the ambient air pollution mix, comprised of gaseous pollutants
and various physical and chemical measures of particulate matter, plays in exacerbating …

The association between daily variations in ambient concentrations of nitrogen dioxide (NO
2 ) and mortality was examined in 12 of Canada's largest cities, using a 19-yr time-series …

BACKGROUND: The risk of hospitalization for asthma caused by outdoor aeroallergens is
largely unknown. OBJECTIVE: The objective of this study was to determine the association …

To clarify the health effects of ozone exposure in young children, the authors studied the
association between air pollution and hospital admissions for acute respiratory problems in …

Objective: Determine the risk of premature mortality due to the urban ambient air pollution mix
in Canada. Methods: The number of daily deaths for non-accidental causes were obtained …

OBJECTIVE Recent studies suggest that chronic exposure to air pollution can promote the
development of diabetes. However, whether this relationship actually translates into an …

Study objectives To document the existence and investigate the etiology of “thunderstorm
asthma,” which has been reported sporadically over the past 20 years. Design We assessed …

Background Studying the physiologic effects of components of fine particulate mass (PM 2.5
) could contribute to a better understanding of the nature of toxicity of air pollution. …

The impact of ambient aeroallergens on morbidity from childhood asthma is largely unknown.
To address this issue, we studied the association between daily emergency department …