RDA = Recommended Dietary Allowance
EAR = Estimated Average Requirement
AI = Adequate Intake
UL = Tolerable Upper Intake Level
a Evaluation of true status requires clinical, biochemical, and anthropometric data.
b Requires statistically valid approximation of distribution of usual intakes.
c For the nutrients in this report, AIs are set for all age groups for water, potassium, and sodium (and chloride on an equimolar basis to sodium). The AI may be used as a guide for infants as it reflects the average intake from human milk. Infants consuming formulas with the same nutrient composition as human milk are consuming an adequate amount after adjustments are made for differences in bioavailability. In the context of assessing groups, when the AI for a nutrient is not based on mean intakes of a healthy population, this assessment is made with less confidence. The use of other DRIs (the Estimated Energy Requirement [EER] and the Acceptable Macronutrient Distribution Range [AMDR]) are described in another report in this series (IOM, 2002/2005).