Computerized nutrient data bases: II. Development of model for appraisal of nutrient data base system capabilities.

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 nutrient data base systems and was found to be a capable tool for assessing their capabilities and accuracy. The review model is intended to be a prototype that can be modified for special needs. Developers of nutrient data base systems are encouraged to utilize this systematic methodology to review their data bases and the performance of their computer programs.