Shawn KarnsShawn A. Karns is a Senior Public Health Analyst in RTI International's Food, Nutrition, and Obesity Policy Research Program where she has developed extensive experience analysing store-based and household-based scanner data for food policy research.She has served as data manager and senior analyst on several studies using scanner data, including to analyse the effects of hypothetical restrictions on foods purchased using SNAP benefits; to estimate the costs of labelling and reformulating foods; and to assess the statistical properties of IRI store-based scanner data, household-based scanner data, and other product characteristics data. Read More Read Less