TABLE 1.

Demographic Data From the Children’s Hospital of Philadelphia Cohort

iNO CohortConventional Treatment Cohort
N9132
Birth weight, g3410 ± 6023333 ± 602
Gestational age, wk39.3 ± 1.739.0 ± 1.9
1-Min Apgar5.1 ± 2.6*6.5 ± 2.2
5-Min Apgar7.4 ± 1.88.1 ± 1.3
Male gender55.0%65.6%
Delivery via cesarean-section65.9%38.7%
Time to arrival at CHOP, median hours (range)24 (4–100)21 (5–144)
Period 1 time, median days (range)4 (1–15)2.5 (1–15)
Time on ventilator, median days (range)12 (4–80)§10 (3–39)
Length of stay, median days (range)24 (1–82)23 (2–91)
  • All variables reported as mean ± SD percentage or median and range.

  • * P = .009 by t test.

  • P = .018 by Fisher’s exact test.

  • P = .016 by nonparametric rank sum test.

  • § P = .031 by nonparametric rank sum test.