Table 2.

Median, p2.5, and p97.5 TSH, total T4, and FreeT4 according to BMI categories in pregnant women without TPOAb (n=647).

	TSH (mIU/L)			Total T4 (nmol/L)			Free T4 (pmol/L)
	2.5	Median	97.5	2.5	Median	97.5	2.5	Median	97.5
UW	0.01	1.82	6.33	92.9	128.7	254.1	11.8	16.1	42.6
NW	0.05	1.9	6.08	87.5	123.6	184.3	11.7	14.8	20.4
OW	0.33	1.87	5.94	85	121	171.1	10.3	14.4	18.8
OB	0.46	2.27	6.61	82.8	118.4	166.9	10.6	14	18.1
p value*	0.02			0.002			<0.001

UW: Underweight (n=43); NW: Normal weight (n=270); OW: Overweight (n=201); OB: Obese (n=133)

^*comparison of medians across four BMI categories using Kruskal-Wallis test.