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Table 4 The incidence of 3- to 10-year-old children whose serum level of T4, FT4, or TSH beyond the standard values in natural conception (NC), fresh embryo transfer (ET), and frozen ET groups

From: Altered thyroid hormone profile in offspring after exposure to high estradiol environment during the first trimester of pregnancy: a cross-sectional study

  

NC

Fresh ET

Frozen ET

Fresh ET vs. NC

Fresh ET vs. Frozen ET

Frozen ET vs. NC

(n = 380)

(n = 357)

(n = 212)

P value

P value

P value

T4

>150.84 (nmol/L)

0 (0%)

2 (0.6%)

0 (0%)

0.23

0.53

NA

FT4

>19.05 (pmol/L)

0 (0%)

26 (7.3%)

10 (4.7%)

<0.01

0.29

<0.01

TSH

>5.05 (mIU/L)

3 (0.08%)

22 (6.2%)

5 (2.4%)

<0.01

0.04

0.14

  1. Data are shown as n (%). NA, Not applicable.