TABLE 1.

Maternal and Neonatal Characteristics of Study Participants

	Study Participants (survivors with 18-mo and 6- to 7-y assessments), N = 110	Excluded (survivors without both assessments), N = 30
Maternal characteristics, (%)
Race, n*
Black	38 (35)	9 (30)
White	45 (41)	6 (20)
Other	27 (25)	15 (50)
Maternal age, y	26.8 ± 5.8	27.3 ± 6.5
Married, n	65 (61)	14 (48)
Maternal education less than high school (at birth)	29 (35)	9 (38)
Maternal education less than high school (at 18 mo)	27 (26)	8 (32)
Medicaid (at 18 mo)	55 (50)	16 (64)
Prenatal care	103 (94)	29 (97)
Gravida, median n	2	2
Parity, median n	2	1.5
Complications of pregnancy, n
Chronic hypertension	18 (16)	4 (13)
Antepartum hemorrhage	20 (18)	2 (7)
Thyroid disease	0 (0)	0 (0)
Diabetes	10 (9)	4 (13)
Intrapartum complications, n
Fetal heart decelerations	82 (75)	24 (80)
Cord prolapse	20 (18)	5 (17)
Uterine rupture	17 (15)	3 (10)
Maternal pyrexia	11 (10)	4 (13)
Shoulder dystocia	14 (13)	3 (14)
Maternal hemorrhage	9 (8)	0 (0)
Labor, h	13.4 ± 10.1	11.7 ± 8.4
Rupture of membrane, h	6.5 ± 11.7	5.5 ± 6.8
Emergency cesarean delivery, n	79 (72)	21 (70)
Neonatal characteristics
Age at randomization, h	4.4 ± 1.3	4.4 ± 1.1
Transferred from birth hospital, n	48 (44)	11 (37)
Male gender, n	61 (55)	17 (57)
Apgar score ≤5, n
At 5 min	97 (88)	25 (86)
At 10 min	76 (76)	18 (69)
Birth wt, g	3359 ± 589	3458 ± 829
Length, cm	50.8 ± 3.0	51.5 ± 2.9
Head circumference, cm	34.1 ± 1.6	33.7 ± 2.3
Intubation in delivery room, n	101 (92)	28 (93)
Continued respiratory support at 10 min, n	100 (91)	28 (93)
Time to spontaneous respiration ≥10 min, n	66 (62)	14 (54)
Cord blood
pH	6.9 ± 0.2	6.9 ± 0.2
Base deficit, mmol/L	18.2 ± 7.3	17.5 ± 6.6
Seizures, n	51 (46)	9 (30)
Moderate encephalopathy, n	86 (78)	22 (76)
Severe encephalopathy, n	24 (22)	7 (24)
Inotropic support, n	34 (31)	11 (37)
Anticonvulsants, n	47 (47)	10 (36)

^*P < .05.