600
Participants
Start Date
November 1, 2024
Primary Completion Date
November 1, 2026
Study Completion Date
December 31, 2026
Iodine excess
Iodine excess areas: water iodine ≥100μg/L; or urinary iodine concentration(median urinary iodine levels in children aged 8-10 years old) ≥300μg/L
Iodine suitable
Iodine suitable areas: water iodine ≥40μg/L and ≤100μg/L; or urinary iodine concentration(median urinary iodine levels in children aged 8-10 years old) 100-199μg/L.
Shandong Provincial Hospital
OTHER_GOV