Predicting Hypertensive Disease in the First Trimester of Pregnancy: Risk Models and Analysis of Serum D-dimer Levels Combined with Plasma Pregnancy-Associated Protein A, Free β-Subunit of Human Chorionic Gonadotropin, and Fetal Nuchal Translucency

Table 1

Comparison of demographic data in the first trimester between the different groups.

Groups		Maternal age (years)	Maternal weight (kg)	Gestational age at testing (days)
Control	150	28.23 (23.11-34.61)	51.00 (43.00-65.23)	91.00 (81.00-97.00)
GH	126	29.26 (21.46-34.48)	59.55 (44.51-91.30)	89.00 (80.00-97.00)
PE	53	29.26 (22.05-34.17)	57.00 (37.67-95.36)	90.00 (81.00-97.00)
SPE	41	28.52 (23.20-35.10)	56.40 (40.15-74.28)	90.00 (76.00-97.00)
		3.676	70.325	3.804
		0.299	<0.001	0.283

GH: gestational hypertension; PE: preeclampsia; SPE: severe preeclampsia. .