Interpreting and using the dietary references intakes in dietary assessment of individuals and groups

Abstract

For individuals, a statistical approach is available to compare observed intakes to the EAR or AI (to assess adequacy), and the UL (to assess risk of excess). A more qualitative assessment of intakes involves comparison directly to the RDA to evaluate adequacy, but this is accurate only if long-term usual intake is known. For groups of people, the prevalence of inadequacy can usually be estimated as the proportion with intakes below the EAR, while the prevalence of potentially excessive intakes is estimated as the proportion above the UL. The accuracy of all assessments depends on unbiased and accurate intake estimates as well as a consideration of the effects of day-to-day variation in intake. Nutrition practitioners will find the new DRIs useful for assessing diets in a variety of settings. Computerized assessment systems will be important tools when incorporating these theoretical concepts into dietetic practice.