Comparison of I-FFQ and Two Reference Methods

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

72 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-08-10

Study Completion Date

2022-06-15

Brief Summary

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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.

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Detailed Description

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Conditions

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Iodine Deficiency

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Interventions

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spot urine samples

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

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* healthy women aged 18-40 years
* sufficient language skills to be able to complete the questionnaires in Norwegian
* be able to meet physically at the study center in Bergen