Abstract #301222

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JSM 2003 Abstract #301222
Activity Number: 20
Type: Contributed
Date/Time: Sunday, August 3, 2003 : 2:00 PM to 3:50 PM
Sponsor: Section on Survey Research Methods
Abstract - #301222
Title: A Revised National Sampling Plan for Obtaining Food Products for Nutrient Analysis
Author(s): Charles R. Perry*+ and Michael E. Bellow and Joanne Holden and Pamela R. Pehrsson
Companies: USDA/National Agricultural Statistics Service and USDA/NASS and USDA/Nutrient Data and USDA
Address: 12402 Washington Brice Rd., Fairfax, VA, 22033-2440,
Keywords: sample design ; National Food and Nutrient Analysis Program (NFNAP) ; USDA National Nutrient Databank System ; USDA Nutrient Database for Standard Reference
Abstract:

The Nutrient Data Laboratory (NDL) of the U.S. Department of Agriculture (USDA) implemented the National Food and Nutrient Analysis Program (NFNAP) in 1998. The goal of this program was to obtain nationally representative estimates of the nutritional components of common foods consumed in the United States for inclusion in the USDA National Nutrient Databank System. The data from this system are disseminated in the USDA Nutrient Database for Standard Reference and other datasets produced by the NDL. This paper describes the revised sample design used to obtain the sample of outlets for collection of the product samples to be analyzed. The revised design, like the initial design, employs a three-stage sample selection process; counties were selected at the first stage, grocery store outlets within the selected counties were selected at the second stage, and at the third stage, a specific food product was purchased for nutrient analyses. Incorporating the 2000 census regions, divisions and states into the second stage selection process results in a self-weighting sample of food products from each region that is geographically dispersed across the United States.

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