Table 1.

Maternal and neonatal characteristics

		No OCP	OCP	P-value
Maternal Characteristics		N = 51	N = 48
Age, median (quartiles)		26 (21, 30)	25 (23, 29)	0.571
Race
African American		25%	40%	0.372
White		69%	58%
More than one		4%	2%
Unknown, not reported		2%	0%
Ethnicity				0.682
Hispanic or Latino		14%	17%
Parity, median (quartiles)		2 (1, 2)	2 (1, 2)	0.421
Gestation (multiple)		20%	19%	0.912
Prenatal care (n=98)		92%	100%	0.0452
Mode of delivery				0.532
SVD		25%	31%
Caesarian section		75%	69%
Anesthesia				0.492
Epidural		75%	83%
General		16%	8%
Hypertension (n=98)		29%	38%	0.352
Diabetes		4%	17%	0.0352
Tobacco use(n=97)		16%	21%	0.52
Premature rupture of membranes*		25%	25%	0.952
Amniotic fluid description (n=98)
Clear		84%	91%	0.492
Bloody		14%	6%
Meconium		2%	2%
Antenatal steroids		88%	90%	0.832
Neonatal characteristics
Gestational age (weeks), median (quartiles)		29 (28, 30)	30 (27, 31)	0.252
Birth weight (grams), median (quartiles)		1170 (905–1340)	1272 (988, 1602)	0.121
Male		41%	50%	0.382
5 minute Apgar score, median (quartiles)		7 (6, 8)	7 (6, 8)	0.741
Surfactant		59%	71%	0.212
Total days intubated		1 (0, 5)	1 (0, 3)	0.971
Early onset bacteremia		2%	0%	0.332
Late onset bacteremia		6%	2%	0.342
Antimicrobial exposure, days, median (quartiles)		7 (3, 9)	3 (2, 8)	0.111
Age at feeding initiation (days), median (quartiles)		2 (2, 3)	2 (2, 3)	0.671
Initial feeding type				0.972
Expressed breast milk		69%	71%
Donor breast milk		29%	27%
Formula		2%	2%
Days to 100ml/kg/day enteral feeds, median (quartiles)		11 (9, 19)	11 (8, 15)	0.391
Type of feeds at discharge
Unfortified breast milk		4%	6%	0.12
Fortified breast milk		41%	60%
Formula only		55%	33%
Necrotizing enterocolitis (≥stage 2)		2%, n=1	4%, n=2	0.642
Days to discharge, median (quartiles)		56 (41, 74)	40 (31, 76)	0.0381

¹Wilcoxon rank test;

²Pearson test,

^*>18 hours prior to delivery