Author, Publication Year, Country; Study Period; Study Design | Inclusion and exclusion criteria | Usual practice regarding twin delivery | Outcomes in original study¥ |
---|---|---|---|
Boukerrou, 2011 France; 2006–2011; Prospective cohort | Inclusion: All twin births during the study period Exclusion: HOM, stillbirths, births less 24 weeks | For non-cephalic second twin, breech extraction with or without internal podalic version is preferred. | Neonatal death (0–28 days), graded IVH and PVL (in provided data only) |
Barzilay, 2015 Israel; 2004–2011; Retrospective cohort | Inclusion: All twin births with second twin birthweight less 1500 g Exclusion: Birth less 24 weeks, fetal death of one or both twins, major malformation in one or both twins | Allow vaginal delivery of cephalic-non-cephalic twin pairs regardless of EFW or GA if EFW of twin B is not 20% higher than that of twin A. Breech extraction is preferred for delivering non-cephalic twin B. | Apgar 5 min, Cord blood PH, Neonatal death (not otherwise specified), Birth trauma, RDS, Sepsis, NEC, IVH, Composite adverse neonatal outcome (neonatal death, RDS, sepsis, NEC, or IVH grade ≥ 3) |
Bricelj, 2016 Slovenia; 2003–2012; Retrospective cohort | Inclusion: All deliveries from 22 weeks or birth weight 500 g up to less than 37 weeks Exclusion: Delayed births, combined deliveries, stillbirths (in provided data only) | Not stated | TTN, RDS, Ventilation need |