Table 1.

Clinical Characteristics of the Study Population.

	Control (n = 37)	Preeclampsia (n = 37)	P
Maternal age,a years	33.0 (18-43)	33.0 (15-41)	.999
Nulliparity, n	16 (43.2%)	27 (73.0%)	.018
Prepregnancy body mass index,a kg/m2	21.1 (15.2-26.4)	22.0 (17.7-31.7)	.412
Gestational age at sampling,a weeks	37.0 (24.1-40.4)	34.0 (26.0-39.9)	.052
Gestational age at delivery,a weeks	37.7 (34.0-41.3)	34.9 (28.0-40.0)	.001
Birth weight,a g	2815 (2110-3820)	2150 (800-4320)	<.001

^a Data are given as median (range).