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Work Under Way

Question

Describe and evaluate nutrients of public health concern.

Approach to Answering the Question
Data Analysis

Subcommittee
Data Analysis and Food Pattern Modeling Cross-Cutting Working Group

Data Analysis Protocol
Developed for each scientific question being examined, the protocol describes the plan for how the data analysis will be conducted. The protocol provides the: 

  • Analytic framework, 
  • Analytic plan, and 
  • Analysis results. 

For this question, a three pronged approach will be used to determine nutrients of public health concern:

1. Estimate prevalence of inadequate and excessive nutrient intakes by comparing current distribution of nutrient intakes in the U.S. population to Dietary Reference Intakes published by the National Academies of Sciences.

Nutrient intakes from food and beverages alone as well as the additional contribution of nutrient from intakes of dietary supplements. 

  • For nutrients with an Estimated Average Requirement (EAR), the estimated prevalence of inadequate intakes will be determined using the EAR cut-point method for nutrients with an EAR.  Iron in menstruating women will be evaluated with the probability approach.
  • For nutrients with an Adequate Intake (AI), mean nutrient intakes will be compared to the AI to determine the estimated prevalence above the AI.
  • For nutrients with a Tolerable Upper Intake Level (UL) or Chronic Disease Risk Reduction (CDRR) intake, the estimated prevalence of potentially excessive intakes will be determined by examining the percent of the population with intakes above the UL or CDRR. 
  • For nutrients with an Acceptable Macronutrient Distribution Range (AMDR), the estimated prevalence of the population with intakes outside of the range will be evaluated. 
  • Percent energy contributed from added sugars and saturated fat will be compared to the 2015-2020 Dietary Guidelines for Americans recommendations of <10% of total energy from each nutrient.

2. When available, consider biological endpoints or validated surrogate endpoints such as biochemical indices of nutrient status with valid cut-points in addition to dietary intakes of nutrients.

3. Consider scientific evidence on the relationship between nutrient inadequacy or excess and clinical health consequences (e.g. cardiovascular disease, cancer).


Note: The analytic plan for infants and toddlers is still in development. The analytic plan for ages 2+ is being implemented. 

For additional details, see the full protocol for the question, describe and evaluate nutrients of public health concern. This protocol is up-to-date as of: 10/22/2019.

View Full Protocol

Draft Conclusion
This page will be updated with the draft conclusion once it has been developed. Draft conclusions are not considered final until they have been deliberated with and decided upon by the full Committee and published in the Committee’s report.