Swiss National Iodine Survey 2020

Completed

• Conditions: Healthy

• Registration Number: NCT04524013
• Lead Sponsor: Isabelle Herter-Aeberli

Brief Summary

This study will assess iodine status in school aged children and pregnant women is Switzerland. In addition, thyroid status and omega-3 index will be assessed in pregnant women.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2020-08-12
• Study First Submitted QC: 2020-08-19
• Study First Posted: 2020-08-24
• Study Start: 2020-10-01
• Primary Completion: 2022-08-31
• Study Completion: 2023-07-30
• Status Verified: 2023-11
• Last Update Submitted: 2023-11-21
• Last Update Posted: 2023-11-22

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 875

Inclusion Criteria

• Healthy
• for pregnant women: confirmed pregnancy
• living in Switzerland for min 1 year

Exclusion Criteria

• no history of major medical illness
• no iodine containing contrast agents or medication in the past 6 months

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Urinary iodine concentration	Baseline	urinary iodine concentration in spot urine samples

Secondary Outcome Measures

Name	Time	Method
Thyroid stimulating hormone	Baseline	TSH from dried blood spots
T3	Baseline	T3 from dried blood spots
Urinary fluoride concentration	Baseline	Urinary fluoride concentration in spot urine samples
Urinary creatinine concentration	Baseline	Urinary creatinine concentration in spot urine samples
Urinary sodium concentration	Baseline	Urinary sodium concentration in spot urine samples
Omega 3 index	Baseline	Omega 3 index from dried blood spots
T4	Baseline	T4 from dried blood spots

Trial Locations

Locations (1)

Human Nutrition Laboratory, ETH Zurich; 🇨🇭 Zurich, Switzerland