Background: Ambient high temperature is associated with death; however, heat-related risk
of death has not been quantified systematically in Ontario, the most populous province in …

Objectives The objective of this study was to use health administrative and environmental
data to quantify the effects of ambient air pollution on health service use among those with …

Background Childhood asthma prevalence is widely measured by parental proxy report of
physician-diagnosed asthma in questionnaires. Our objective was to validate this measure in …

Rationale: The American Thoracic Society guidelines (1999) for methacholine challenge
tests (MCTs) using the 2-minute tidal breathing protocol were developed for the now-obsolete …

Nitrogen dioxide (NO 2 ), a surrogate measure of traffic-related air pollution (TRAP), has been
associated with incident childhood asthma. Timing of exposure and atopic status may be …

Although individuals spend the majority of their time indoors, most epidemiological studies
estimate personal air pollution exposures based on outdoor levels. This almost certainly …

BACKGROUND: Asthma is the most common chronic disease in children.OBJECTIVES: To
describe the prevalence of asthma and allergic disease in a multiethnic, population-based …

Home characteristic questions are used in epidemiological studies and clinical settings to
assess potentially harmful exposures in the home. The objective of this study was to determine …

BACKGROUND: Epinephrine autoinjectors provide life-saving therapy for individuals with
peanut allergies. OJECTIVE: To evaluate the association between socioeconomic status (SES…

Introduction Asthma guidelines have suggested that treatment decisions should be guided
by indices of asthma control and not only by disease severity. In adults, symptom‐based …