Comparison of I-FFQ and Two Reference Methods

University of Bergen

Status: Completed

Conditions: Iodine Deficiency

Treatments: Biological: spot urine samples

Study type: Observational

Funder types: Other

Identifiers

NCT05934006

2021/232247

Details and patient eligibility

About

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.

Enrollment: 72 patients

Sex: Female

Ages: 18 to 40 years old

Volunteers: Accepts Healthy Volunteers

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

Exclusion criteria

• being pregnant, lactating, or having known thyroid disease