From: The correlation between the thyroid function and urinary iodine/creatinine ratio of pregnant women attending a tertiary hospital in Beijing, China, during different trimesters
Trimester
TSH
FT3
FT4
r
P
First
-0.102
0.216
0.089
0.279
0.168
0.025
Second
-0.087
0.290
0.114
0.165
0.205
0.005
Third
-0.076
0.357
0.098
0.232
0.139
0.090