Table II. Demographic and clinical characteristics of normal pregnant women and subgroups of fetal death.

	Control n = 129	Unexplained fetal death n = 25	p	Fetal death with preeclampsia/Abruption n=5	p	Fetal death with major congenital or chromosomal anomalies n = 5	p
Age (years)	23 (14-40) α	25 (18-41)	0.2	25 (19-31)	0.8	27 (17-36)	0.4
GA at amniocentesis (weeks)	33.3 (20.3-42.0)	30.1 (20.4-40.6)	0.03*	33.6 (20.3-40.0)	0.9	23.6 (22.0-30.9)	0.001*
GA at delivery (weeks)	38.7 (37.0-43.0)	30.3 (20.6-40.7)	<0.001*	33.6 (20.6-40.0)	0.04*	23.7 (22.1-31.1)	<0.001*
Birthweight (grams)	3,255 (2,630-4,750)	1,276 (140-5,755)	<0.001*	1,890 (387-3,620)	0.01*	420 (180-1,620)	<0.001*
Birthweight <10th percentile	0	12 (48.0%)	<0.001*	2 (40%)	<0.001*	3 (60%)	<0.001*

All p value compared to control

Value expressed as median (range) or number (percent)

GA: gestational age;

^αn=116;

^*p<0.05