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Evidence found and GRADE certainty

2,289 questions · 2,331 findings · 195 reviews · Pregnancy and Childbirth

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No studies found 480 · 20.6%GRADE not reported 288 · 12.4%Very low 467 · 20%Low 630 · 27%Moderate 338 · 14.5%High 128 · 5.5%

Universal screening vs risk‐factor screening

Gestational diabetes · pregnant women, excluding women already diagnosed with GDM in this pregnancy and those with pre‐existing diabetes mellitus

Universal screening may leads to higher gestational diabetes mellitus compared with risk‐factor screening (low certainty).

1 finding from 1 review

Primary care screening vs secondary care screening

Gestational diabetes · pregnant women, excluding women already diagnosed with GDM in this pregnancy and those with pre‐existing diabetes mellitus

Primary care screening showed no clear difference in gestational diabetes mellitus compared with secondary care screening (low certainty).

1 finding from 1 review

Primary care screening vs secondary care screening

Caesarean section · pregnant women, excluding women already diagnosed with GDM in this pregnancy and those with pre‐existing diabetes mellitus

Primary care screening showed no clear difference in caesarean birth compared with secondary care screening (low certainty).

1 finding from 1 review

Primary care screening vs secondary care screening

Large‐for‐gestational age · pregnant women, excluding women already diagnosed with GDM in this pregnancy and those with pre‐existing diabetes mellitus

Primary care screening showed no clear difference in large‐for‐gestational age compared with secondary care screening (low certainty).

1 finding from 1 review

Primary care screening vs secondary care screening

Perinatal mortality · pregnant women, excluding women already diagnosed with GDM in this pregnancy and those with pre‐existing diabetes mellitus

It is very uncertain whether primary care screening changes perinatal mortality compared with secondary care screening (very low certainty).

1 finding from 1 review

Primary care screening vs secondary care screening

Neonatal mortality or morbidity composite: neonatal complications · pregnant women, excluding women already diagnosed with GDM in this pregnancy and those with pre‐existing diabetes mellitus

Primary care screening showed no clear difference in neonatal mortality or morbidity composite: neonatal complications compared with secondary care screening (low certainty).

1 finding from 1 review

Primary care screening vs secondary care screening

Hypoglycaemia · pregnant women, excluding women already diagnosed with GDM in this pregnancy and those with pre‐existing diabetes mellitus

It is very uncertain whether primary care screening changes hypoglycaemia compared with secondary care screening (very low certainty).

1 finding from 1 review