3. Pre‐specified overview outcomes in included reviews.

Included review	Biesty 2018	Brown 2017a	Brown 2017b	Brown 2017c	Brown 2017d	Brown 2016a	Han 2017	Han 2012	Martis 2016a	Raman 2017
Maternal
Hypertensive disorders of pregnancy (including preeclampsia, pregnancy‐induced hypertension, eclampsia as defined in reviews)	X	√	√	√	√	√	√	√ secondary outcome and pre‐eclampsia only in this review	√	√
Mode of birth (caesarean section)	√	√ called 'caesarean section' in the review	√	√	√	√ called 'caesarean section' in the review	√	√ includes also normal vaginal birth and operative vaginal birth	√ secondary outcome called 'caesarean section' in the review	√
Development of type 2 diabetes	X	√	√	√	√	√	√	X	√	√
Induction of labour	X	√	√	√	√	√	√	√	√	√
Perineal trauma/tearing	√ (called 'intact perineum)' in review	√	√	√	√	√	√	√	√	√
Postnatal depression	√	√	√	√	√	√	√	X	√	√
Postnatal weight retention or return to pre‐pregnancy weight	X	√	√	√	√	√	√	√	√	√
Development of type 2 diabetes	X	√	X	√	√	X	√	√	X	√
Neonatal/child/adult
Perinatal (fetal and neonatal death) and later infant mortality	√	√	√	√ does not include later infant mortality	√	√ called 'perinatal mortality (stillbirth and neonatal mortality)' in review; does not include later infant mortality	√ does not include later infant mortality	√ does not include later infant mortality	√ later infant mortality not stated	√
Large‐for‐gestational age (as defined in reviews)	√	√	√	√	√	√	√	√	√	√
Death or serious morbidity composite (as defined in reviews, e.g. perinatal or infant death, shoulder dystocia, bone fracture or nerve palsy)	X	√	√	√	√	√	√	X	√	√
Neurosensory disability in later childhood (as defined in reviews)	x	√	√	√	√	√ called 'neurosensory disability' in this review	√	X	√	√
Adiposity neonate (including skinfold thickness measurements (mm), fat mass); Adiposity child (including BMI, skinfold thickness, fat mass); Adiposity ‐ adult (including BMI, skinfold thickness, fat mass)	X	√	√	√	√	√	√	√ three separate outcomes: BMI, fat mass/fat‐free mass, skinfold thickness measurements	√	√
Neonatal hypoglycaemia (as defined in the reviews)	√	√	√	√	√	√	√	√	√	√
Diabetes (type 2) child, adult	X	√	√	√	√	√	√	√	√	√
Health service use
Number of antenatal visits or admissions	X	√	√	√	√	√	√	√ visits only, not admissions	√	√
Length of stay in neonatal intensive care unit or special care baby unit	X	√	√	√ called 'duration'	√	X	X	X	X	√
Length of postnatal stay (maternal)	X	√	√	√ called 'duration of maternal and neonatal hospital stay(antenatal, neonatal, postnatal)'	√	√	√	√	√	√
Length of postnatal stay (baby)	√	√	√	√ called 'duration of maternal and neonatal hospital stay(antenatal, neonatal, postnatal)'	√	√	√	√	√	√
Costs associated with the treatment	X	√ called 'costs associated with the intervention'	√	√ called 'costs associated with the intervention'	√ called 'costs associated with the intervention'	√	√	√ only 'costs for blood glucose monitoring during pregnancy'	√	√

√ = pre‐specified overview review outcome included in the Cochrane systematic review

X = pre‐specified overview review outcome NOT included in the Cochrane systematic review