Gap finder

Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

726 questions in 98 reviews · Pregnancy and Childbirth

current versions
No studies 726 · 100%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Magnesium sulphate vs placebo (outcomes
Breastfeeding at hospital discharge** · women at risk of preterm birth (< 34 weeks' gestation)
Magnesium sulphate for women at risk of preterm birth for neuroprotection of the fetus (2024) · Cochrane
no estimate extractedNRNo studies
Magnesium sulphate vs placebo (outcomes
Women’s views of treatment** · women at risk of preterm birth (< 34 weeks' gestation)
Magnesium sulphate for women at risk of preterm birth for neuroprotection of the fetus (2024) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Vitamin B12 supplementation vs placebo/no vitamin B12 supplementation
Neural tube defects ‐ not reported · pregnant women
Vitamin B12 supplementation during pregnancy for maternal and child health outcomes (2024) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Any psychosocial intervention vs treatment
Adverse events ‐ not measured · stopping or reducing alcohol consumption during pregnancy
Psychosocial and medication interventions to stop or reduce alcohol consumption during pregnancy (2024) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Any psychosocial intervention vs treatment
Withdrawal signs and symptoms ‐ not measured · stopping or reducing alcohol consumption during pregnancy
Psychosocial and medication interventions to stop or reduce alcohol consumption during pregnancy (2024) · Cochrane
no estimate extractedNRNo studies
Respiratory syncytial virus vaccine vs placebo
Infant hospitalisation with clinically confirmed RSV disease · pregnant woman
Respiratory syncytial virus vaccination during pregnancy for improving infant outcomes (2024) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Planned hospital birth vs Planned home birth
Maternal mortality ‐ not reported · Pregnant women at low risk of complications
Planned hospital birth compared with planned home birth for pregnant women at low risk of complications (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Planned hospital birth vs Planned home birth
Perinatal mortality ‐ not reported · Pregnant women at low risk of complications
Planned hospital birth compared with planned home birth for pregnant women at low risk of complications (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Planned hospital birth vs Planned home birth
Apgar < 7 at 5 min ‐ not reported · Pregnant women at low risk of complications
Planned hospital birth compared with planned home birth for pregnant women at low risk of complications (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Planned hospital birth vs Planned home birth
Transfer to neonatal intensive care unit ‐ not reported · Pregnant women at low risk of complications
Planned hospital birth compared with planned home birth for pregnant women at low risk of complications (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Planned hospital birth vs Planned home birth
Maternal satisfaction ‐ not reported · Pregnant women at low risk of complications
Planned hospital birth compared with planned home birth for pregnant women at low risk of complications (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Moxibustion plus usual care vs sham moxibustion plus usual care
Premature rupture of membranes ‐ not reported · breech presentation
Cephalic version by moxibustion for breech presentation (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Moxibustion plus usual care vs sham moxibustion plus usual care
Use of oxytocin ‐ not reported · breech presentation
Cephalic version by moxibustion for breech presentation (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Moxibustion plus usual care vs sham moxibustion plus usual care
Cord blood pH < 7.1 ‐ not reported · breech presentation
Cephalic version by moxibustion for breech presentation (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Moxibustion plus usual care vs sham moxibustion plus usual care
Need for ECV ‐ not reported · breech presentation
Cephalic version by moxibustion for breech presentation (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: lower‐dose regimens vs standard‐dose regimens
Other neonatal morbidity · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: IV maintenance vs standard IM maintenance regimen
Severe morbidity · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: IV maintenance vs standard IM maintenance regimen
Side effects · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: IV maintenance vs standard IM maintenance regimen
Other neonatal morbidity · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: loading dose alone vs loading dose plus maintenance dose regimen
Severe morbidity · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: duration of postpartum maintenance regimen: short vs 24 hours after delivery
Death of the baby before discharge from hospital · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: duration of postpartum maintenance regimen: short vs 24 hours after delivery
Maternal death · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: duration of postpartum maintenance regimen: short vs 24 hours after delivery
Other neonatal morbidity · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: loading dose alone vs loading dose + maintenance regimen
Severe morbidity · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: loading dose alone vs loading dose plus maintenance dose regimen
Side effects · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: loading dose alone vs loading dose + maintenance regimen
Side effects · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: loading dose alone vs loading dose + maintenance regimen
Other neonatal morbidity · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: IV maintenance vs standard IM maintenance regimen
Severe morbidity · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: IV maintenance vs standard IM maintenance regimen
Side effects · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: loading dose alone vs loading dose plus maintenance dose regimen
Death of the baby before discharge from hospital · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: IV maintenance vs standard IM maintenance regimen
Maternal death · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: IV maintenance vs standard IM maintenance regimen
Other neonatal morbidity · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: short vs standard maintenance regimen (subgroups by type of short regimen)
Death of the baby before discharge from hospital · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: short vs standard maintenance regimen (subgroups by type of short regimen)
Maternal death · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: short vs standard maintenance regimen (subgroups by type of short regimen)
Other neonatal morbidity · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: higher vs lower IV maintenance regimen
Severe morbidity · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: higher vs lower IV maintenance regimen
Death of the baby before discharge from hospital · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: higher vs lower IV maintenance regimen
Maternal death · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: higher vs lower IV maintenance regimen
Other neonatal morbidity · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Prevention of eclampsia: maintenance regimen by continuous infusion vs a serial IV bolus regimen
Severe morbidity · women with pre‐eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: loading dose alone vs loading dose plus maintenance dose regimen
Other neonatal morbidity · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Treatment of eclampsia: lower‐dose regimens vs standard‐dose regimens
Side effects · women with eclampsia
Alternative magnesium sulphate regimens for women with pre‐eclampsia and eclampsia (2023) · Cochrane
no estimate extractedNRNo studies
Intensity of glycaemic control for women with gestational diabetes mellitus: tight glycaemic targets vs less‐tight glycaemic targets (child (as neonate, child, adult) outcomes)
Neurosensory disability · children (as neonate, child, adult) of women with gestational diabetes mellitus
Different intensities of glycaemic control for women with gestational diabetes mellitus (2023) · Cochrane
no estimate extractedNRNo studies
Intensity of glycaemic control for women with gestational diabetes mellitus: tight glycaemic targets vs less‐tight glycaemic targets (child (as neonate, child, adult) outcomes)
Diabetes · children (as neonate, child, adult) of women with gestational diabetes mellitus
Different intensities of glycaemic control for women with gestational diabetes mellitus (2023) · Cochrane
no estimate extractedNRNo studies
Intensity of glycaemic control for women with gestational diabetes mellitus: tight glycaemic targets vs less‐tight glycaemic targets (maternal outcomes)
Subsequent development of type 2 diabetes · women with gestational diabetes mellitus
Different intensities of glycaemic control for women with gestational diabetes mellitus (2023) · Cochrane
no estimate extractedNRNo studies
Intensity of glycaemic control for women with gestational diabetes mellitus: tight glycaemic targets vs less‐tight glycaemic targets (maternal outcomes)
Return to pre‐pregnancy weight · women with gestational diabetes mellitus
Different intensities of glycaemic control for women with gestational diabetes mellitus (2023) · Cochrane
no estimate extractedNRNo studies
Intensity of glycaemic control for women with gestational diabetes mellitus: tight glycaemic targets vs less‐tight glycaemic targets (maternal outcomes)
Perineal trauma · women with gestational diabetes mellitus
Different intensities of glycaemic control for women with gestational diabetes mellitus (2023) · Cochrane
no estimate extractedNRNo studies
Intensity of glycaemic control for women with gestational diabetes mellitus: tight glycaemic targets vs less‐tight glycaemic targets (maternal outcomes)
Postnatal depression · women with gestational diabetes mellitus
Different intensities of glycaemic control for women with gestational diabetes mellitus (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Support plus vs usual care
Stopping breastfeeding (any) at 9 months ‐ not reported · healthy breastfeeding women with healthy term babies
Support for healthy breastfeeding mothers with healthy term babies (2022) · Cochrane
no estimate extractedNRNo studies
Summary of findings table ‐ Repeat dose(s) of prenatal corticosteroids vs single course
Admission to the intensive care unit ‐ not reported · the woman
Repeat doses of prenatal corticosteroids for women at risk of preterm birth for improving neonatal health… (2022) · Cochrane
no estimate extractedNRNo studies