. Author manuscript; available in PMC: 2011 Mar 1.

Published in final edited form as: J Matern Fetal Neonatal Med. 2010 Aug 11;24(3):391–396. doi: 10.3109/14767058.2010.507294

Table 1.

Demographic and clinical characteristics of the study population

Variable	No fetal anemia (n=6)	Fetal anemia (n=10)	p
Maternal age (years)	36 (31.5–39)	35 (30.7–36.2)	0.4

Ethnic origin - Hispanic	100 (6)	100 (10)	1

Smoking	50 (3)	0 (0)	0.04

Prepregnancy BMI (kg/m²)	26.7 (23.3–30.1)	25.3 (22.7–27.6)	0.5

Gestational age at sampling (weeks)	29.9 (28.2–32.7)	30.8 (27.7–32.6)	1.0

Gestational age at delivery (weeks)	35.8 (33.5–36.3)	35.4 (33.5–35.9)	0.6

Birthweight (grams)	2550 (2167–2892)	2620 (2337–2925)	0.9

Values are expressed as median (interquartile range) or percent (number)

BMI, body mass index