An observational study in Healthy Subjects, sponsored by Isabelle Herter-Aeberli. Completed at 1 site in Switzerland. Open to participants aged 6 Years to 44 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-09-16.
Sponsored by Isabelle Herter-Aeberli · Observational
The aim of this study is to monitor iodine nutrition in Switzerland in order to inform the authorities regarding iodine content in iodized salt. As a proxy for the entire population the investigators will study school aged children, pregnant women and women of reproduction age.
In a national sample of school aged children (n=990), pregnant women (n=700) and women of reproductive age (n=700) urinary iodine will be determined in order to assess iodine nutrition in Switzerland. In addition, in both groups of women a blood sample will be taken for the determination of thyroid hormones, iron- and folate status. Questionnaires will be used for the determination of dietary iodine and salt intake as well as sociodemographic parameters.
Isabelle Herter-Aeberli is the lead sponsor of 13 studies on the registry; 1 is open to participants now.
Counted across the registry records on this site, refreshed daily.
school aged children, 6-12 years pregnant women, 18-44 years women of reproductive age, 18-44 years
Exclusion Criteria:
Median urinary iodine concentration in school aged children, pregnant women and women of reproductive age
analysis of urine samples
Time frame: Baseline
Population mean thyroglobulin
Analysis of venous blood samples. Assessed only in women
Time frame: Baseline
Population mean thyroid stimulating hormone
Analysis of venous blood samples. Assessed only in women
Time frame: Baseline
Population mean thyroxine
Analysis of venous blood samples. Assessed only in women
Time frame: Baseline
Median urinary sodium concentration
Time frame: Baseline
Median urinary creatinin concentration
Time frame: Baseline
Mean height of school aged children and women of reproductive age
Time frame: Baseline
Mean weight of school aged children and women of reproductive age
Time frame: Baseline
Median urinary fluoride
Analyzed in urine samples from school aged children only.
Time frame: Baseline
Population mean folate status
Analysis of red blood cell folate and plasma folate in venous blood samples.
Time frame: Baseline
Populations mean iron status
Serum analysis: ferritin, transferrin receptor; in women of reproductive age and pregnant women.
Time frame: Baseline
Individual inflammatory state
Serum analysis of CRP and AGP, analyzed only in women
Time frame: Baseline
Intake of iodine in micro grams per day
iodine intake assessed by food frequency questionnaire, only in women
Time frame: Baseline
% of households with adequate iodine coverage
Salt samples only collected from children (subgroup)
Time frame: Baseline
This study is completed, as verified in Sep 2020. You cannot join it, but the record below documents what was studied.
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Isabelle Herter-Aeberli