TABLE 2.

Characteristics of Study Infants

InbornOutbornAll
No. of infants
 199811 889224714 136
 199913 102272615 828
 200014 673297117 644
 Total39 664794447 608
Female, %484547
Ethnicity and race, %
 Hispanic121913
 Black302630
 White534952
 Asian333
 Other232
Multiple birth, %262025
SGA, %11710
Cesarean section, %595258
Antenatal steroids, %804374
Apgar score ≤3 at 1 min, %303731
Received surfactant at any time, %778779
Mechanical ventilation899590
Survived, %838083
Birth weight (g; mean [SD])920 (260)937 (253)923 (259)
Gestational age (wk; mean [SD])27 (2)26 (2)27 (2)
Total length of stay (d; mean [SD])
 Survivors77 (36)79 (39)77 (37)
 Deaths19 (42)21 (44)19 (42)
  • SGA indicates small for gestational age; SD, standard deviation.