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Variability of Daily Iodine Intake: The Effects of Intra- and Inter-individual Variability in Iodine Nutrition Studies

NCT03731312 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 206

Last updated 2021-09-14

No results posted yet for this study

Summary

Iodine status in populations is assessed using urinary iodine concentration (UIC) measured in spot urine samples. The iodine intake is classified as deficient, sufficient, or excessive iodine based on the median UIC (mUIC). However, this approach has limitations, as it does not quantify the prevalence of individuals with habitually deficient or excess iodine intakes. The EAR cut-point method has the potential to quantify prevalence of iodine deficiency and excess. However, little is known about the effects of the inter- and intra-individual variance of UIC.

The aim of the study is to quantify the intra-individual variability in dietary iodine intake. The overall goal is to estimate the prevalence of iodine deficiency and excess in the study population and propose sample size recommendations for future iodine nutrition population studies. The results will provide evidence guiding international recommendations for iodine nutrition studies.

Conditions

  • Iodine Deficiency

Interventions

OTHER

No intervention

This is an observational study and no interventions will be administered.

Sponsors & Collaborators

  • Swiss Federal Institute of Technology

    lead OTHER

Principal Investigators

  • Jessica Rigutto-Farebrother, PhD · ETH Zurich

Eligibility

Min Age
18 Years
Max Age
44 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2018-10-01
Primary Completion
2021-05-04
Completion
2021-05-04

Countries

  • Switzerland

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03731312 on ClinicalTrials.gov