Multivariate logistic regression models investigating the role of
gestational age and circumstances at delivery on neonatal outcomes. The
following variables were tested as potential confounders: maternal age,
parity, previous preterm birth, race, education, BMI, excessive wait
gain, smoking, utilization of assisted reproductive technologies,
treatment with LDA, progesterone, or LMWH, antenatal corticosteroids
AOR: adjusted OR
The area under receiver operating characteristic (ROC) curve was
respectively 0.68 for composite adverse neonatal outcomes, 0.65 for
neonatal resuscitation, 0.66 for metabolic complications, and 0.69 for
respiratory support.
For details about specific definitions please see table S1 .