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Comparison of I-FFQ and Two Reference Methods

NCT05934006 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 72

Last updated 2023-07-06

No results posted yet for this study

Summary

Mild-to-moderate iodine deficiency remains a problem in many parts of the world, including Norway. Of particular concern are fertile, pregnant, and lactating women. The Norwegian Dairy Council developed a digital iodine-specific food frequency questionnaire (I-FFQ) for the assessment of iodine intake levels, but it has yet to be validated. The main objective was thus to investigate the relative validity of the I-FFQ by comparing estimates of iodine intake obtained from the I-FFQ against a single 24-hour recall (24HR) and urinary iodine concentration (UIC) in fertile women.

Conditions

  • Iodine Deficiency

Interventions

BIOLOGICAL

spot urine samples

No intervention, but measurement of urinary iodine concentration by 6 repeated spot urine samples

Sponsors & Collaborators

  • National Dairy Council

    collaborator OTHER

  • Institute of Marine Research

    collaborator OTHER

  • University of Bergen

    lead OTHER

Principal Investigators

  • Hanne Rosendahl-Riise, PhD · University of Bergen

Eligibility

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

Timeline & Regulatory

Start
2021-08-10
Primary Completion
2022-01-01
Completion
2022-06-15

Countries

  • Norway

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 NCT05934006 on ClinicalTrials.gov