Table I.

Demographic and clinical characteristics of the study population

	Normal Pregnancy N= 71	Preeclampsia (N= 130)	SGA (N= 58)	FD (N= 58)
Maternal age (years)	24.2±4.5	25.9± 6.9	26.1± 6.7	25.9±6.5
Gravidity*
1	14(20.3%)	44 (34.1%)	12 (21.4%)	17 (30.4%)
2-5	45(65.2%)	69 (53.5%)	37 (66.1%)	28 (50%)
≥6	10(14.5%)	16 (12.4%)	7 (12.5%)	11(19.6%)
Parity**
1	39 (55.7%)	93(72.1%)*	38 (66.7%)	37 (64.9%)
2-5	30(42.9%)	32(24.8%)	18(31.6%)	17 (29.8%)
≥6	1 (1.4%)	4 (3.1%)	1 (1.7%)	3 (5.3%)
Ethnic origin †
African-Americans	53 (77.9%)	108 (84.37%)	48 (87.3%)	51 (91.07%)
Caucasian	11(16.1%)	13 (10.15%)	4 (7.3%)	3 (5.35%)
Hispanic	2 (3%)	5 (3.9%)	1 (1.8%)	1 (1.75%)
Asian	2(3%)	1 (0.78%)	1 (1.8%)	1 (1.75%)
Other	0	1 (0.78%)	1 (1.8%)	0
Gestational age at blood collection (weeks)	30.8 ± 5.1	33.9± 4.7*	33.8±4.8*	29.9 ±6.02
Gestational age at delivery (weeks)	39.4 ± 1.5	34.1± 4.6*	35.3± 4.1*	30.1± 5.9*
Induction of labor***	10 (17.8%)	59 (45.7%)*	32 (55.2%)*	48 (85.7%)*
Cesarean delivery****	22 (33.3%)	68 (53.1%)*	17 (29.3%)	1 (1.8%)*

Data are presented as mean ± standard deviation or numbers (%)

^*= Normal pregnancy (N=69); Preeclampsia (N=129); SGA (N=56); FD (N=56)

^**= Normal pregnancy (N=70); Preeclampsia (N=129); SGA (N=57); FD (N=57)

^†= Normal pregnancy (N=68); Preeclampsia (N=128); SGA (N=55); FD (N=56)

SGA= small for gestational age

FD= fetal demise

The groups were compared with the normal pregnancy group: *P<0.05

^***Normal pregnancy (N=56), Preeclampsia (N=129), FD (N=56).

^****Normal pregnancy (N=66), Preeclampsia (N=128), FD (N=56).