A recommended dietary allowance (RDA) for a nutrient is derived from an estimated average requirement (EAR), which is an estimate of the intake at which the risk of inadequacy to an individual is 50%.Click to see full answer. Also asked, what is the meaning of Recommended Dietary Allowance?Recommended Dietary Allowance: The RDA, the estimated amount of a nutrient (or calories) per day considered necessary for the maintenance of good health by the Food and Nutrition Board of the National Research Council/ National Academy of Sciences. It is popularly called the Recommended Daily Allowance.Furthermore, who sets recommended daily allowance? Recommended Dietary Allowances (RDA), the daily dietary intake level of a nutrient considered sufficient by the Food and Nutrition Board of the Institute of Medicine to meet the requirements of 97.5% of healthy individuals in each life-stage and sex group. Moreover, how are recommended daily allowances determined? The Recommended Dietary Allowance (RDA), by definition, meets the requirements of 97.5 percent of the population. It is set from an Estimated Average Requirement (EAR) that represents an intake amount that will meet the needs of about 50 percent of the population.How RDA is calculated?The RDA is set at the EAR plus twice the standard deviation (SD) if known (RDA = EAR + 2 SD); if data about variability in requirements are insufficient to calculate an SD, a coefficient of variation for the EAR of 10 percent is ordinarily assumed (RDA = 1.2 x EAR).