Betty P. Perloff

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The USDA Survey Nutrient Database and other technical files used to code foods and calculate nutrient values for national food consumption surveys were updated, redesigned, and renamed the USDA Food and Nutrient Database for Dietary Studies (FNDDS). This new database is now available over the internet from the Food Surveys Research Group (FSRG). Code(More)
OBJECTIVE To determine whether the differences between the procedures and nutrient databases used in the 1977-1978 Nationwide Food Consumption Survey (1977-78 NFCS) and those used in the 1987-88 NFCS could notably affect the estimated mean nutrient intakes. DESIGN This was a split-sample field experiment. Seventy-two area segments were randomly selected;(More)
A reliable dietary analysis system is a requirement for accurate nutritional analysis of dietary data. Information provided in this paper can be used to assist with the development of new systems or with evaluation of existing systems. Development of a dietary analysis system for research usually beings with a food composition data set from USDA. Major(More)
Representative values for folacin in 299 foods have been developed, based on an extensive literature review. A provisional table of these folacin values has been prepared for foods in 100-gm. portions and for specified weights, representing common household units. The data reflect newer methodology than that used for a prior USDA publication, namely,(More)
The effect of improved food composition data on nutrient intake estimates was determined by re-analyzing dietary intake data from the Continuing Survey of Food Intake by Individuals (CSFII) 1994–1996, 1998 with the multi-year version of the Food and Nutrient Database for Dietary Studies (FNDDS) 1.0, wherein only the data improvements such as those due to(More)
A review model has been developed that present a methodology for assessing the computational accuracy of a computerized dietary analysis system and provides a strategy for examining the status of nutrient data utilized in the computations. The model, which consists of a questionnaire, five computing tasks, and an interpretation guide, was tested by seven(More)
The method used by the Agricultural Research Service to process nearly 11,000 24-hour dietary recalls collected in the first year of USDA’s Continuing Survey of Food intakes by Individuals 1994-96 (CSFII) contributed to the release of data about eight months after final data receipt from the contractor. This method involved several new facets, one of which(More)
The U.S. Department of Agriculture's (USDA) Nutrient Data Base for Nationwide Dietary Intake Surveys is specifically organized and maintained to analyze data from nationwide dietary surveys within the federal government's National Nutrition Monitoring System. These surveys include the Nationwide Food Consumption Survey and the Continuing Survey of Food(More)
OBJECTIVE To compare 24-hour dietary recalls collected over the telephone to in-person recalls collected in the 1994-1996 Continuing Survey of Food Intakes by Individuals (CSFII). DESIGN Trained interviewers collected 24-hour dietary recalls over the telephone using the multiple-pass approach. These results were compared to in-person interviews from a(More)
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