Table 2.

DLK1 maternal serum levels at 26 weeks of gestation according to maternal and neonatal characteristics.

Cases/Controls	n	m ± sd	p
Controls	368	30.4 ± 10.6	< 10-3
Cases (SGA)	192	27.7 ± 8.7
Medical Center			0.75
Poitiers	232	29.3 ± 10.6
Nancy	328	29.6 ± 9.9
Sex			0.36
Male	300	29.1 ± 9.4
Female	260	29.9 ± 10.7
Placental vascular dysfunction			0.009
Controls	368	30.4 ± 10.6
Cases (SGA) without signs of placental vascular dysfunction	129	28.0 ± 8.5
Cases (SGA) with signs of placental vascular dysfunction	63	27.1 ± 9.2
Smoking during pregnancy
No	398	29.9 ± 10.5	0.07
Yes	161	28.4 ± 8.8