Table 3 Demographic variables collected during the DoMINO trial

Gestational age at birth+

Gravity/Parity*

Birth weight, length and head circumference+

Artificial reproductive technology (type and origin of eggs, sperm)+

Size for gestational age (small [SGA], appropriate [AGA] or large for [LGA] gestational age)+

Antibiotic use prior to delivery (prior 2 weeks)+

Sex+

Use of Prenatal Steroids+

Multiple birth status+

Cesarean delivery*

5-minute Apgar score+

Mom has previously breastfed (yes/no)*

Newborn Illness severity score (SNAP-II+)

Mom intends to breastfeed (yes/no)*

Parental education (highest degree or diploma attained)*

Parental weight and height (self-reported)*

Parental age*

Number of children in current household*

Smoking (maternal history during pregnancy)*

First language spoken in the home*

Socioeconomic status (single parenting; above or below poverty line)*

Ethnicity*