Table 1.

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

	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

*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