Summary
This CDC/NHANES technical documentation describes the methods, laboratory procedures, and data quality considerations underpinning biomarker-based nutrient status data collected in the 2017–2020 National Health and Nutrition Examination Survey. It provides a reference resource for researchers and policymakers interpreting population-level nutritional biomarker data in the United States. The documentation likely covers analytic procedures, reference ranges, and known data limitations arising from the partial overlap with the COVID-19 pandemic period.
UK applicability
As a US federal surveillance dataset, direct applicability to UK policy is limited; however, the methods and biomarker frameworks used are internationally recognised and may inform comparable UK surveillance efforts such as the National Diet and Nutrition Survey (NDNS).
Key measures
Serum and plasma micronutrient concentrations (e.g. vitamins, minerals, folate, iron status markers); population-level nutrient adequacy estimates
Outcomes reported
The documentation reports measured biomarker concentrations reflecting nutritional status across a nationally representative US population sample, covering key micronutrients and related biochemical indicators collected during the 2017–2020 survey cycle.
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