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10004778
Spatially Random Sampling for Retail Food Risk Factors Study
Authors:
Abstract:
In 2013 and 2014, the U.S. Food and Drug Administration (FDA) collected data from selected fast food restaurants and full service restaurants for tracking changes in the occurrence of foodborne illness risk factors. This paper discussed how we customized spatial random sampling method by considering financial position and availability of FDA resources, and how we enriched restaurants data with location. Location information of restaurants provides opportunity for quantitatively determining random sampling within non-government units (e.g.: 240 kilometers around each data-collector). Spatial analysis also could optimize data-collectors’ work plans and resource allocation. Spatial analytic and processing platform helped us handling the spatial random sampling challenges. Our method fits in FDA’s ability to pinpoint features of foodservice establishments, and reduced both time and expense on data collection.
Digital Object Identifier (DOI):

References:

[1] FDA National Retail Food Team, “FDA Report on the Occurrence of Foodborne Illness Risk Factors in Selected Institutional Foodservice, Restaurant, and Retail Food Store Facility Types (2009)”, http://www.fda.gov/downloads/Food/FoodSafety/RetailFoodProtection/FoodborneIllnessandRiskFactorReduction/RetailFoodRiskFactorStudies/UCM224682.pdf
[2] FDA National Retail Food Team, “FDA Trend Analysis Report on the Occurrence of Foodborne Illness Risk Factors in Selected Institutional Foodservice, Restaurant, and Retail Food Store Facility Types (1998-2008)”, http://www.fda.gov/downloads/Food/GuidanceRegulation/RetailFoodProtection/FoodborneIllnessRiskFactorReduction/UCM369245.pdf
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[7] R.M. Lark, “Optimized spatial sampling of soil for estimation of the variogram by maximum likelihood”, in Geoderma, 98(1-2), pp. 35-59, 2000
[8] Z. Zhu, M.L. Stein, “Spatial sampling design for parameter estimation of the covariance function”, Journal of Statistical Planning and Inference, 134(2), pp. 583-603, 2005.
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