From: Protocol of the PSYCHOTSH study: association between neonatal thyroid stimulating hormone concentration and intellectual, psychomotor and psychosocial development at 4–5 year of age: a retrospective cohort study
Percentage of neonatal TSH > 5 mU/L
Iodine nutrition
0-3%
Iodine sufficiency
3-19.9%
Mild iodine deficiency
20 à 39,9%
Moderate iodine deficiency
≥ 40%
Severe iodine deficiency