Table 1

Information retrieved from hospital and medical records in the AOB study

Maternal history

Smoking, drug dependent

Pre-existing diabetes, heart disease, hypertension

Chronic renal disease, other chronic disorder, auto immune conditions

Maternal past pregnancy history

Previous term births, past preterm birth, previous preterm deliveries

Number of previous c-sections

Abortion, stillbirth(s), neonatal death, major congenital anomaly

History of intrauterine growth restriction, SGA, LGA

Indicated pregnancy

Smoking, drinking

Date admitted to labour and delivery

Assisted conception

Gravidity, parity

Maternal height <=152cm, maternal weight (<=45Kg, >=91Kg), poor weight gain

Antepartum risk score

Pregnancy complications/problems

Infection in pregnancy (GBS, HIV, HepB, other), fever, UTI

Poly/oligo, ROM <37 wks, bleeding

Pregnancy induced hypertension, gestational diabetes

Proteinuria, anemia

Cerclage, pre-eclampsia, eclampsia, abruption, prolonged premature rupture of membranes, placenta previa,

Intrauterine growth restriction, polyhydramnios, chorioamnionitis


Site, type of delivery provider

Multiple pregnancy, maternal age at delivery, gestation, pregnancy >=41 weeks

Admitted for elect c-section, reason for operative delivery

Indication for induction, cervical dilatation at presentation, type of delivery, delivery mode

(Fetal) presentation in labour, trial of labour

Method of induction (oxytocin, artificial rupture of membranes, other)

Narcotics in labour, epidural in labour, Antenatal steroids, use of intrapartum antibiotics

Second stage (minutes), third stage (minutes)


Neonatal gender, birth weight, date/time, disposition

5 minute Apgar score

Meconium, resuscitation

NICU admission, congenital anomaly


Maternal discharge date, maternal discharge disposition, length of stay

Breastfeeding at discharge

McDonald et al. BMC Pregnancy and Childbirth 2013 13(Suppl 1):S2   doi:10.1186/1471-2393-13-S1-S2

Open Data