Table 2.

Gestational Age (in Weeks) of Earliest Use of Therapeutic Interventions

InterventionOptimistsPessimistsP
Thermal support22  ± 0.422  ± 0.0NS
Oxygen by hood23  ± 0.323  ± 0.3NS
Intravenous fluids23  ± 0.424  ± 0.3<.001
Inotropes24  ± 0.025  ± 0.6<.001
Cardiopulmonary resuscitation24  ± 0.425  ± 0.5<.001
Mechanical ventilation24  ± 0.425  ± 0.6<.005