The use of ecologic covariates in cohort mortality studies: A re-analysis of the American Cancer Society study of the health effects of particulate air pollution.

Alette. Willis
Background. Recent studies of long-term exposure to ambient air pollution suggest that particulate matter in urban air is a risk factor for mortality. However, these studies are potentially biased because they have not taken into account spatial processes. This thesis examines the effect of exposure to sulfate air pollution when place-specific covariates, scale and spatial autocorrelation are controlled for. Methods. This thesis builds upon the American Cancer Society (ACS) Study by introducing place-specific covariates into...
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