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close this book Food Composition Data: A User's Perspective (1987)
close this folder Managing food composition data
close this folder Maintaining a food composition data base for multiple research studies: the NCC food table
View the document (introductory text)
View the document Introduction
View the document Specific user needs and approaches to these needs
View the document Minimizing redundancy in the nutrient data base
View the document Summary
View the document References

Summary

Summary

A table of food composition designed to meet the ongoing nutrient analysis needs of multiple research studies must be continually updated and expanded. Standardized methods of updating and imputing nutrient values must be established, and sources of all values must be carefully documented. Computerized edit checks and other quality-control procedures must be incorporated into the system to ensure the accuracy of the data base.

To accommodate the needs of multiple long-term studies, a number of versions of the data base are maintained by the NCC. Flexibility is provided to meet different levels of specificity of dietary detail required by different research protocols.

Procedures have been established by the NCC to facilitate ongoing maintenance of the data base without loss of the specificity required by the users of the system.