Iodine Status Has No Impact on Thyroid Function in Early Healthy Pregnancy

Table 2

Main significant correlations.

Ioduria
Negatively	Maternal age	𝑟=−0.2	𝑃=0.05
	Thyroid volume	𝑟=−0.22	𝑃=0.03
Positively	𝛽HCG	𝑟=0.27	𝑃<0.01
TSH
Negatively	fT4	𝑟=−0.27	𝑃<0.005
	rT3	𝑟=−0.24	𝑃=0.01
	𝛽hCG	𝑟=−0.36	𝑃<0.0001
Positively	Maternal weight	𝑟=0.19	𝑃=0.06
fT4
Negatively	Maternal weight	𝑟=−0.2	𝑃=0.05
Positively	TT4	𝑟=0.44	𝑃<0.0001
	rT3	𝑟=0.44	𝑃<0.0001
	𝛽 hCG	𝑟=0.18	𝑃=0.058
fT3
Positively	Tg	𝑟=0.22	𝑃=0.02
rT3
Negatively	Smoking		𝑃=0.001
Positively	𝛽hCG	𝑟=0.4	𝑃<0.0001
	fT4	𝑟=0.44	𝑃<0.0001
	TT4	𝑟=0.5	𝑃<0.0001
	TBG	𝑟=0.33	𝑃=0.0005
Tg
Positively	fT3	𝑟=0.22	𝑃=0.02
	Smoking		𝑃=0.0001
𝛽hCG
Negatively	TSH	𝑟=−0.36	𝑃<0.0001
Positively	Ioduria	𝑟=0.27	𝑃<0.01
	TT4	𝑟=0.3	𝑃<0.005
	fT4	𝑟=0.18	𝑃=0.058
	rT3	𝑟=0.4	𝑃<0.0001
	TBG	𝑟=0.40	𝑃<0.0001
Thyroid volume
Negatively	Ioduria	𝑟=−0.22	𝑃=0.05
Positively	Smoking		𝑃=0.02