Zip Codes or Street Addresses? Comparing Ambient Ozone Exposures for Alternative Spatial Resolutions of Cohort Subjects (original) (raw)

Epidemiology, 2006

Abstract

ABSTRACT Home > November 2006 - Volume 17 - Issue 6 > Zip Codes or Street Addresses? Comparing Ambient Ozone Expos... < Previous Article | Next Article > Epidemiology: November 2006 - Volume 17 - Issue 6 - p S110 ISEE/ISEA 2006 Conference Abstracts Supplement: Session Abstracts: Abstracts Zip Codes or Street Addresses? Comparing Ambient Ozone Exposures for Alternative Spatial Resolutions of Cohort Subjects Soret, S*; Ghamsary, M*; Shavlik, D*; Beeson, W L.*; Chen, L H.*; Wiafe, S*; Press, J†; Knutsen, S* Free Access Article Outline Author Information *School of Public Health, Loma Linda University, Loma Linda, CA; and †University of California, Riverside, CA SM5-PD-03 Back to Top | Article Outline Introduction: Accurate estimation of exposures is of the outmost importance for drawing valid inferences about the spatial relationship of risk factors with health outcomes of concern. In air pollution epidemiology, estimates are often derived from monitoring data. With GIS technology, we can map individuals to their street address rather than to a central location by zip code. Assuming the validity of the spatial interpolation method chosen and the representativeness of exposure data, an independent question remains: Does enhanced positional accuracy of subjects result in reduced exposure misclassification? We compared the estimated ozone exposures assigned to our cohort subjects when their locations are resolved alternatively by zip code centroids and by street addresses.

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