Table 1.

Maternal and infant demographics and clinical characteristics

	PGF n=65	No PGF n=58	P value
Gestational age, weeks (mean±sd)	30.8±3.8	31.9±3.4	0.09
Birth weight, grams	1388.1±716.0	2016.1±541.4	<0.001
Birth weight for gestational age percentile	31.1±23.4	68.9±18.5	<0.001
Male gender, n(%)	36(49)	38(51)	0.25
Multiple gestation	29(45)	17(30)	0.08
Apgar score, median (IQR)
1-minute	6 (3,8)	7.5 (5,8)	0.07
5-minute	8 (7,9)	8.5 (8,9)	0.29
Maternal age, years (mean ± sd)	31.1±6.4	31.7±6.4	0.53
Maternal race, n(%)
Black	12(10)	7(6)
White	30(24)	34(28)	0.35
Other	21(17)	19(15)
Chorioamnionitis	4(44)	5(56)	0.60
Vaginal delivery	27(46)	32(54)	0.13
Antenatal steroids	25(53)	22(47)	0.95
Preeclampsia	24(67)	12(33)	0.05
Maternal Diabetes	6(50)	6(50)	0.84
Placental characteristics:**
Placental weight, grams (mean±sd)	395.1±228.5	423.3±181.4	0.51
Maternal vascular pathology	35(61)	12 (30)	0.004
Fetal vascular pathology	11(19)	7(17)	0.78
Patent ductus arteriosus	17(55)	14(45)	0.79
Moderate-severe bronchopulmonary dysplasia	17(26)	9(16)	0.14
Necrotizing enterocolitis	12(75)	4(25)	0.06
Grade 3–4 IVH	6(9)	1(2)	0.12
Retinopathy of prematurity	20(31)	8(14)	0.03
SGA (<10% percentile)	15(100)	0(0)	<0.001
Hospital stay, median days (IQR)	44(16,89)	26(5,50)	0.02
Daily caloric intake, kcal/kg/day (mean±se):
Day of life 7	89.8±3.3	92.7±2.0	0.24
14	104.4±3.1	107.3±2.2	0.24
21	110.0±3.3	113.3±2.6	0.22
28	108.7±3.4	112.7±3.9	0.22
56	114.0±4.8	111.4±4.3	0.63
Protein intake, gm/kg/day:
Day of life 7	3.0±0.1	2.6±0.2	1.00
14	3.3±0.1	3.0±0.1	1.00
21	3.2±0.1	3.0±0.1	0.78
28	3.1±0.1	2.9±0.2	0.79
56	3.4±0.1	3.1±0.2	0.87

^*P-values calculated using student’s t-test for continuous variables and X² for categorical variables.

^**Data available on 57 PGF and 41 non-PGF births.