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Table 1 The median (5th–95th percentile range) values of clinical and laboratory parameters in patients with newly onset of thyrotoxicosis during pregnancy

From: Comparative frequency of four different types of pregnancy-associated thyrotoxicosis in a single thyroid centre

 

Gestational thyrotoxicosis

n = 30

New onset Graves’ thyrotoxicosis during pregnancy

n = 13

p value**

Onset age (years)

31.0 (24–40)

33.0 (25–37)

0.3257

Onset time (gestational weeks)

12.0 (8–15)

13.0 (10.8–17.8)

0.018

FT4 (ng/dl)

1.96 (1.61–2.52)

2.47 (1.67–3.94)

0.003

FT3 (pg/ml)

4.67 (3.76–6.67)

10.31 (4.72–30.00)

<0.001

FT3/FT4

2.38 (1.98–3.06)

3.66 (2.40–7.47)

<0.001

Thyroid volume (g)

17.1 (11.1–29.8)

27.4 (17.8–40.8)

<0.001

Blood flow (%)

1.6 (0.8–6.6)

6.5 (1.4–18.8)

0.004

TRAb (IU/l)

1.3 (1.3–1.3)*

5.6 (5.6–32.0)

<0.001

TgAb (IU/ml)

28.0 (28.0–42.9)*

28 (28–454.2)*

0.003

TPOAb (IU/ml)

16.0 (16.0–16.8)*

19.3 (16–441.6)*

<0.01

Positive rate of TRAb (%)

0

100

<0.001

Positive rate of TgAb (%)

10.0

46.2

0.007

Positive rate of TPOAb (%)

3.3

46.2

<0.001

  1. *Undetectable levels of TRAb, TgAb and TPOAb less than 1.3 IU/l, 28.0 U/ml and 16.0 U/ml were respectively calculated as 1.3, 28.0 and 16.0. **Comparisons of various parameters between GT and Gr during pregnancy were performed by the Mann-Whitney U-test