Three-dimensional power Doppler ultrasound evaluation of placental blood flow in normal monochorionic diamniotic twin pregnancies

Table 1 Comparative characteristic of subjects between the MCDA twin and singleton groups

	MCDA twin group	Singleton group
	(n = 104)	(n = 106)
Maternal age (years old)	29.2 ± 6.2	27.7 ± 3.4
Parity (primapara/multipara)	61 (58.7%)/43 (41.3%)	56 (53.3%)/50 (46.7%)
BMI	29.9 ± 4.3	27.6 ± 4.0
Gestational age at time of delivery (weeks)	35 ± 3.4^a	38 ± 2.2

BMI body mass index, MCDA monochorionic diamniotic, ^a, p < 0.05, data were presented compared with the singleton group

ISSN: 1471-2393