1. Other obstetric outcomes.
| Outcome | Study ID |
| Birth weight ≥ 2500 g | Radnai 2009 |
| Small for gestational age (10th percentile) | Michalowicz 2006; Newnham 2009; Offenbacher 2009 |
| Preterm/low birth weight | López 2002; López 2005; Oliveira 2011; Radnai 2009; Sadatmansouri 2006; Pirie 2013 |
| Birth length | Michalowicz 2006; Newnham 2009; Offenbacher 2009; Pirie 2013 |
| Head circumference | Newnham 2009; Pirie 2013 |
| Amniotic fluid index (< 5 cm, > 25 cm) | Newnham 2009 |
| Umbilical artery S/D ratios | Newnham 2009 |
| Umbilical cord artery/vein blood (number, pH, PCO2, PO2, base excess) | Newnham 2009 |
| Meconium in amniotic fluid | Newnham 2009 |
| Decision on delivery based on electronic fetal heart rate monitoring | Newnham 2009 |
| Scalp pH measured in labour | Newnham 2009 |
| Nonreassuring fetal heart rate pattern | Newnham 2009 |
| Caesarean delivery for nonreassuring fetal heart rate | Newnham 2009 |
| Electronic fetal heart rate monitoring in labour | Newnham 2009 |
| Ventilation | Newnham 2009 |
| Continuous Positive Airway Pressure (CPAP) | Newnham 2009 |
| Oxygen | Newnham 2009 |
| Special care nursery admission | Newnham 2009 |
| 1‐min Apgar score | Pirie 2013 |
| 5‐min Apgar score (0‐3, 4‐7, 8‐10) | Offenbacher 2009; Pirie 2013 |
| Apgar score (< 7 at 1 min, < 7 at 5 min) | Michalowicz 2006; Newnham 2009; Pirie 2013 |
| Admission to neonatal intensive care unit (number admitted, length of stay > 2 days, discharged alive) | Michalowicz 2006; Offenbacher 2009 |
| Sepsis necessitating antibiotics | Newnham 2009 |
| Composite neonatal morbidity/mortality | Macones 2010; Newnham 2009; Offenbacher 2009 |
| HELLP syndrome, severe pre‐eclampsia | Herrera 2009 |
| Prenatal visits | López 2005 |
| Onset of labour (spontaneous, induced, augmented, no labour) | Newnham 2009 |
| Mode of delivery (spontaneous vaginal, assisted vaginal, elective caesarean, emergency caesarean) | Newnham 2009; Pirie 2013 |
| Fever > 37o C in labour | Newnham 2009 |
| Postpartum haemorrhage (> 1000 mL) | Newnham 2009 |
| Retained placenta | Newnham 2009 |
| Fraction of expected birth weight | Newnham 2009 |
| Urinary tract infection | Farrell 2003; López 2005 |
| Vaginosis, underweight, onset prenatal care after 20 weeks of gestation | López 2005 |
S/D = systolic/diastolic ratio.