. Author manuscript; available in PMC: 2018 Oct 1.

Published in final edited form as: Brain Behav Immun. 2017 Apr 25;65:11–19. doi: 10.1016/j.bbi.2017.04.018

Table 1.

Characteristics of Study Population (N = 673).

	Mean (Standard Deviation) or Number (Percentage)
Age, years	29.3 (5.5)
Race/ethnicity
Non-Hispanic White	398 (59.1%)
Non-Hispanic Black	110 (16.3%)
Hispanic	126 (18.7%)
Maternal education
High school diploma or less	175 (26.0%)
Bachelor’s degree or more	266 (39.5%)
Parity
Nulliparous	293 (43.5%)
Obstetric Risk Conditions
Previous preterm birth	47 (7.0%)
Pre-eclampsia	36 (5.3%)
Gestational hypertension	75 (11.1%)
Pregnancy and Birth Outcomes
Gestational age at delivery, weeks	38.9(2.1)
Preterm birth (< 37 weeks GA)	55 (8.2%)
Birth weight, grams	3317(585)
Small for gestational age, < 10^th percentile	61 (9.1%)
Special care nursery admission	129 (19.3%)
Length of baby hospital stay, days	3.8 (8.4)