TABLE 1

Maternal and Neonatal Characteristics of Study Participants

Study Participants (survivors with 18-mo and 6- to 7-y assessments), N = 110Excluded (survivors without both assessments), N = 30
Maternal characteristics, (%)
 Race, n*
  Black38 (35)9 (30)
  White45 (41)6 (20)
  Other27 (25)15 (50)
 Maternal age, y26.8 ± 5.827.3 ± 6.5
 Married, n65 (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 care103 (94)29 (97)
 Gravida, median n22
 Parity, median n21.5
 Complications of pregnancy, n
  Chronic hypertension18 (16)4 (13)
  Antepartum hemorrhage20 (18)2 (7)
  Thyroid disease0 (0)0 (0)
  Diabetes10 (9)4 (13)
 Intrapartum complications, n
  Fetal heart decelerations82 (75)24 (80)
  Cord prolapse20 (18)5 (17)
  Uterine rupture17 (15)3 (10)
  Maternal pyrexia11 (10)4 (13)
  Shoulder dystocia14 (13)3 (14)
  Maternal hemorrhage9 (8)0 (0)
  Labor, h13.4 ± 10.111.7 ± 8.4
  Rupture of membrane, h6.5 ± 11.75.5 ± 6.8
  Emergency cesarean delivery, n79 (72)21 (70)
Neonatal characteristics
 Age at randomization, h4.4 ± 1.34.4 ± 1.1
 Transferred from birth hospital, n48 (44)11 (37)
 Male gender, n61 (55)17 (57)
 Apgar score ≤5, n
  At 5 min97 (88)25 (86)
  At 10 min76 (76)18 (69)
 Birth wt, g3359 ± 5893458 ± 829
 Length, cm50.8 ± 3.051.5 ± 2.9
 Head circumference, cm34.1 ± 1.633.7 ± 2.3
 Intubation in delivery room, n101 (92)28 (93)
 Continued respiratory support at 10 min, n100 (91)28 (93)
 Time to spontaneous respiration ≥10 min, n66 (62)14 (54)
 Cord blood
  pH6.9 ± 0.26.9 ± 0.2
  Base deficit, mmol/L18.2 ± 7.317.5 ± 6.6
 Seizures, n51 (46)9 (30)
 Moderate encephalopathy, n86 (78)22 (76)
 Severe encephalopathy, n24 (22)7 (24)
 Inotropic support, n34 (31)11 (37)
 Anticonvulsants, n47 (47)10 (36)