Aperçu

Résumé (français)

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Résumé (anglais)

It is known that a variety of environmental factors are implicated in the incidence of asthma and asthma symptoms during childhood and adolescence. In this thesis, individual-level data from the National Longitudinal Study of Children and Youth (NLSCY) were used to examine the relationships between farm residence and ambient air pollution exposure, respectively, with the future risk of asthma and asthma symptoms. In a 14-year follow-up study, we found that children resident in farming environments were found to have a significantly lower risk of incident asthma than those who did not. In a separate cross-sectional study, we found evidence for a positive relationship between high levels of nitrogen dioxide (NO2) exposure and the 12-month prevalence of asthma attacks in children.