Abstract Details
Activity Number:
|
442
|
Type:
|
Contributed
|
Date/Time:
|
Tuesday, August 6, 2013 : 2:00 PM to 3:50 PM
|
Sponsor:
|
Government Statistics Section
|
Abstract - #309990 |
Title:
|
Revised National Sampling Plan for Obtaining Food Products for Nutrient Analysis
|
Author(s):
|
Charles Perry*+ and Pamela Pehrsson and Marlon Daniel
|
Companies:
|
NDL\BRAC\ARS and NDL\BRAC\ARS and NDL\BRAC\ARS
|
Keywords:
|
Sample Design, National Food and Nutrient Analysis Program (NFNAP), USDA National Nutrient Databank
|
Abstract:
|
The Nutrient Data Laboratory (NDL) of the United States 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.
This design, like the previous 2001 design, employs a three-stage, stratified, probability-proportional-to-size (PPS) sample selection process. Using this method will result in a self weighting sample of population centers, ensuring geographic dispersion across the 48 conterminous states; 48 locations were selected, with nested subsets of 24, 12 and 6 locations.
Increased penetration of warehouse-type retail outlets into the grocery industry, we adjusted the sampling frame to include these purchase locations. This will ensure that food samples which are collected according to this statistically rigorous sampling approach are consistent with national representativeness and allow better estimates of the mean and variability than convenience sampling or less rigorous options.
|
Authors who are presenting talks have a * after their name.
Back to the full JSM 2013 program
|
2013 JSM Online Program Home
For information, contact jsm@amstat.org or phone (888) 231-3473.
If you have questions about the Continuing Education program, please contact the Education Department.
The views expressed here are those of the individual authors and not necessarily those of the JSM sponsors, their officers, or their staff.
Copyright © American Statistical Association.