211138 Exposure assessment in epidemiological studies of drinking water

Monday, November 9, 2009: 12:53 PM

J. Michael Wright, ScD , U.S. Environmental Protection Agency, Cincinnati, OH
Exposure assessment aims to ascertain the magnitude, duration, frequency and routes of exposure to enable estimation of individual- or population-level exposures. Exposure assessment is one of the main limitations in epidemiological studies of waterborne contaminants and is a key source for potential misclassification bias. As population dynamics (e.g., increased mobility/migration) and water consumption patterns change, this becomes an increasingly difficult task. This presentation will address some of the inherent exposure assessment challenges, and will include a discussion of routes of exposure for waterborne contaminants, relevant exposure indices, indirect and direct exposure assessment approaches, reliability and validity of survey data, and techniques to reduce measurement error in exposure estimates.

Learning Objectives:
Not applicable.

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: Have conducted epidemiological studies of waterborne contaminants as well as related research on exposure assessment. Served as EPA epidemiologist for 8 years.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.