Neonatal outcomes.

Data are presented as number (percent) unless otherwise indicated.aPercentages, RRs, 95% CIs, and p-values given according to available data.bOutcome characteristic with more than 5% missing data. Neonatal temperature data available for 292 infants (54%); pH umbilical artery data available for 397 (74%); intraventricular hemorrhage data available for 508 (94%).cMean difference with 95% CI.HIE, hypoxic ischemic encephalopathy; IQR, interquartile range; IVH, intraventricular hemorrhage; NA, not applicable; PVL, periventricular leucomalacia; SD, standard deviation.