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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)

3,601 questions in 252 reviews · Pregnancy and Childbirth

current versions
No studies 726 · 20.2%Ungraded 421 · 11.7%Very low 828 · 23%Low 993 · 27.6%Moderate 486 · 13.5%High 147 · 4.1%

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
Metformin vs glibenclamide ‐ neonatal outcomes
Neurosensory disability in later childhood ‐ not measured · Infants of women diagnosed with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ maternal outcomes
Hypertensive disorders of pregnancy ‐ not reported · women diagnosed with gestational diabetes; 11 to 33 weeks' gestation; singleton pregnancy
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Oral anti‐diabetic pharmacological therapies vs placebo ‐ maternal outcomes
Development of type 2 diabetes ‐ not measured · women diagnosed with gestational diabetes; 24‐30 weeks' gestation; singleton pregnancy.
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ maternal outcomes
Caesarean section · women diagnosed with gestational diabetes; 11 to 33 weeks' gestation; singleton pregnancy
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.95 [0.53, 1.7]1 study · 43 participantsLow
Glibenclamide vs acarbose ‐ maternal outcomes
Development of type 2 diabetes ‐ not reported · women diagnosed with gestational diabetes; 11 to 33 weeks' gestation; singleton pregnancy
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ maternal outcomes
Perineal trauma ‐ not reported · women diagnosed with gestational diabetes; 11 to 33 weeks' gestation; singleton pregnancy
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ maternal outcomes
Return to pre‐pregnancy weight ‐ not reported · women diagnosed with gestational diabetes; 11 to 33 weeks' gestation; singleton pregnancy
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ maternal outcomes
Postnatal depression ‐ not reported · women diagnosed with gestational diabetes; 11 to 33 weeks' gestation; singleton pregnancy
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ maternal outcomes
Induction of labour ‐ not reported · women diagnosed with gestational diabetes; 11 to 33 weeks' gestation; singleton pregnancy
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ neonatal outcomes
Large‐for‐gestational age · women with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
RR 2.38 [0.54, 10.46]1 study · 43 participantsLow
Glibenclamide vs acarbose ‐ neonatal outcomes
Perinatal mortality · women with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extracted1 study · 43 participantsLow
Glibenclamide vs acarbose ‐ neonatal outcomes
Death or serious morbidity composite ‐ not reported · women with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ neonatal outcomes
Neonatal hypoglycaemia · women with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
RR 6.33 [0.87, 46.32]1 study · 43 participantsLow
Oral anti‐diabetic pharmacological therapies vs placebo ‐ maternal outcomes
Perineal trauma · women diagnosed with gestational diabetes; 24‐30 weeks' gestation; singleton pregnancy.
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.98 [0.06, 15.62]1 study · 375 participantsVery low
Glibenclamide vs acarbose ‐ neonatal outcomes
Adiposity ‐ not reported · women with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ neonatal outcomes
Diabetes ‐ not reported · women with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide vs acarbose ‐ neonatal outcomes
Neurosensory disability in later childhood ‐ not reported · women with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Oral anti‐diabetic pharmacological therapies vs placebo ‐ maternal outcomes
Return to pre‐pregnancy weight ‐ not measured · women diagnosed with gestational diabetes; 24‐30 weeks' gestation; singleton pregnancy.
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Oral anti‐diabetic pharmacological therapies vs placebo ‐ maternal outcomes
Postnatal depression ‐ not measured · women diagnosed with gestational diabetes; 24‐30 weeks' gestation; singleton pregnancy.
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Oral anti‐diabetic pharmacological therapies vs placebo ‐ maternal outcomes
Induction of labour · women diagnosed with gestational diabetes; 24‐30 weeks' gestation; singleton pregnancy.
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
RR 1.18 [0.79, 1.76]1 study · 375 participantsVery low
Oral anti‐diabetic pharmacological therapies vs placebo ‐ neonatal outcomes
Large‐for‐gestational age · infants of women diagnosed with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.89 [0.51, 1.58]1 study · 375 participantsVery low
Oral anti‐diabetic pharmacological therapies vs placebo ‐ neonatal outcomes
Perinatal mortality · infants of women diagnosed with gestational diabetes
Oral anti‐diabetic pharmacological therapies for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Lifestyle interventions vs control ‐ Maternal outcomes
Hypertensive disorders of pregnancy (pre‐eclampsia) · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.7 [0.4, 1.22]4 studies · 2796 participantsLow
Lifestyle vs control ‐ Neonatal and later outcomes
Composite outcome in infant (death, shoulder dystocia, nerve palsy, bone fracture) · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.57 [0.21, 1.55]2 studies · 1930 participantsVery low
Lifestyle vs control ‐ Neonatal and later outcomes
Neonatal hypoglycaemia · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.99 [0.65, 1.52]6 studies · 3000 participantsModerate
Lifestyle vs control ‐ Neonatal and later outcomes
Adiposity (neonatal) ‐ Neonatal fat mass (g) · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extracted1 study · 958 participantsLow
Lifestyle vs control ‐ Neonatal and later outcomes
Adiposity (child) ‐ Childhood BMI > 85th percentile · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.91 [0.75, 1.11]3 studies · 767 participantsModerate
Lifestyle vs control ‐ Neonatal and later outcomes
Adiposity (adult) not measured · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Lifestyle vs control ‐ Neonatal and later outcomes
Diabetes (type 2) (child) ‐ not measured · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Lifestyle vs control ‐ Neonatal and later outcomes
Diabetes (type 2) (adult) ‐ not measured · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Lifestyle vs control ‐ Neonatal and later outcomes
Neurosensory disability (child) ‐ not measured · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Lifestyle vs control ‐ Neonatal and later outcomes
Neurosensory disability (adult) ‐ not measured · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
no estimate extractedNRNo studies
Lifestyle interventions vs control ‐ Maternal outcomes
Perineal trauma/tear · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 1.04 [0.93, 1.18]1 study · 1000 participantsModerate
Lifestyle interventions vs control ‐ Maternal outcomes
Caesarean section · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.9 [0.78, 1.05]10 studies · 3545 participantsLow
Lifestyle interventions vs control ‐ Maternal outcomes
Induction of labour · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 1.2 [0.99, 1.46]4 studies · 2699 participantsHigh
Lifestyle interventions vs control ‐ Maternal outcomes
Postnatal depression · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.49 [0.31, 0.78]1 study · 573 participantsLow
Lifestyle interventions vs control ‐ Maternal outcomes
Postnatal weight retention or return to pre‐pregnancy weight · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 1.75 [1.05, 2.9]1 study · 156 participantsLow
Lifestyle interventions vs control ‐ Maternal outcomes
Development of type 2 diabetes ( · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.98 [0.54, 1.76]2 studies · 486 participantsLow
Lifestyle vs control ‐ Neonatal and later outcomes
Large‐for‐gestational age · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.6 [0.5, 0.71]6 studies · 2994 participantsModerate
Lifestyle vs control ‐ Neonatal and later outcomes
Perinatal (fetal and neonatal death) and later infant mortality · Women with gestational diabetes
Lifestyle interventions for the treatment of women with gestational diabetes (2017) · Cochrane
RR 0.09 [0.01, 1.7]2 studies · 1988 participantsLow
Remifentanil (PCA) vs another opioid (IV/IM)
Satisfaction (overall) with pain relief (VAS 0 to 10 cm, NRS 1 to 4, NRS 0 to 10, VRS 0 to 5) · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
no estimate extracted4 studies · 216 participantsVery low
Remifentanil (PCA) vs another opioid (PCA)
Additional analgesia required (escape analgesia) · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
RR 0.76 [0.45, 1.28]3 studies · 215 participantsLow
Remifentanil (PCA) vs another opioid (PCA)
Rate of caesarean delivery · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
RR 2.78 [0.99, 7.82]2 studies · 143 participantsVery low
Remifentanil (PCA) vs another opioid (PCA)
Maternal apnoea · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Remifentanil (PCA) vs another opioid (PCA)
Maternal respiratory depression · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Remifentanil (PCA) vs another opioid (PCA)
Apgar score ≤ 7 (< 7) at 5 min · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
no estimate extracted1 study · 17 participantsVery low
Remifentanil (PCA) vs epidural/CSE
Satisfaction (overall) with pain relief (NRS 0 to 4, 1 to 4, 0 to 10, 1 to 10, VRS 1 to 4) · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
no estimate extracted7 studies · 2135 participantsVery low
Remifentanil (PCA) vs epidural/CSE
Pain intensity 'early' (1 h) (VAS 0 to 10 cm, VAS 0 to 100 cm, NRS 0 to 10) · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
no estimate extracted6 studies · 235 participantsLow
Remifentanil (PCA) vs epidural/CSE
Additional analgesia required · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
RR 9.27 [3.73, 23.03]6 studies · 1037 participantsModerate
Remifentanil (PCA) vs epidural/CSE
Rate of caesarean delivery · women in labour with planned vaginal delivery
Patient‐controlled analgesia with remifentanil versus alternative parenteral methods for pain management in… (2017) · Cochrane
RR 1 [0.82, 1.22]9 studies · 1578 participantsModerate