From: Urinary iodine in early pregnancy is associated with subclinical hypothyroidism in Tianjin, China: an observational study
Group
UIC (μg/L) frequency distribution
Total
<150
150–249
≥250
Euthyroidism
20
18
2
40
Subclinical hypothyroidism
7
6
5
27
24
58
P
0.433
0.404
0.025
0.066