Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

146 questions · 147 findings · 9 reviews · Pregnancy and Childbirth

No studies found 19 · 12.9%GRADE not reported 48 · 32.7%Very low 18 · 12.2%Low 37 · 25.2%Moderate 15 · 10.2%High 10 · 6.8%

Vitamin E vs placebo, no placebo or other supplements

Pre‐eclampsia · pregnant women receiving vitamin E supplementation or control, living in areas where there is either inadequate dietary intake of vitamin…

Any vitamin E supplementation showed no clear difference in clinical pre‐eclampsia (random‐effects model) compared with placebo, no placebo or other supplements (moderate certainty).

1 finding from 1 review

Vitamin E vs placebo, no placebo or other supplements

Intrauterine growth restriction · pregnant women receiving vitamin E supplementation or control, living in areas where there is either inadequate dietary intake of vitamin…

Any vitamin E supplementation showed no clear difference in intrauterine growth restriction (various definitions) compared with placebo, no placebo or other supplements (high certainty).

1 finding from 1 review

Vitamin E vs placebo, no placebo or other supplements

Preterm prelabour rupture of membranes · pregnant women receiving vitamin E supplementation or control, living in areas where there is either inadequate dietary intake of vitamin…

Any vitamin E supplementation showed no clear difference in prelabour rupture of fetal membranes ‐ preterm compared with placebo, no placebo or other supplements (low certainty).

1 finding from 1 review

Vitamin E vs placebo, no placebo or other supplements

Bleeding episodes (placental abruption) · pregnant women receiving vitamin E supplementation or control, living in areas where there is either inadequate dietary intake of vitamin…

Any vitamin E supplementation leads to lower bleeding episodes (placental abruption) compared with placebo, no placebo or other supplements (high certainty).

1 finding from 1 review

Intervention not reported

Stillbirth · All pregnant women receiving either vitamin C supplementation or control either in areas where there is inadequate dietary intake or where…

The intervention showed no clear difference in stillbirth (moderate certainty).

1 finding from 1 review

Intervention not reported

Intrauterine growth restriction · All pregnant women receiving either vitamin C supplementation or control either in areas where there is inadequate dietary intake or where…

The intervention showed no clear difference in intrauterine growth restriction (high certainty).

1 finding from 1 review

Intervention not reported

Preterm birth (< 37 weeks' gestation) · All pregnant women receiving either vitamin C supplementation or control either in areas where there is inadequate dietary intake or where…

The intervention showed no clear difference in preterm birth (< 37 weeks' gestation) (high certainty).

1 finding from 1 review

Intervention not reported

Preterm prelabour rupture of membranes · All pregnant women receiving either vitamin C supplementation or control either in areas where there is inadequate dietary intake or where…

The intervention showed no clear difference in preterm prelabour rupture of membranes (low certainty).

1 finding from 1 review

Intervention not reported

Clinical pre‐eclampsia · All pregnant women receiving either vitamin C supplementation or control either in areas where there is inadequate dietary intake or where…

The intervention showed no clear difference in clinical pre‐eclampsia (moderate certainty).

1 finding from 1 review

Intervention not reported

Placental abruption · All pregnant women receiving either vitamin C supplementation or control either in areas where there is inadequate dietary intake or where…

The intervention leads to lower placental abruption (high certainty).

1 finding from 1 review

Intervention not reported

Gestational diabetes mellitus · pregnant women (women with pre‐existing type 1 or type 2 diabetes are NOT included)

It is very uncertain whether the intervention changes gestational diabetes mellitus (very low certainty).

1 finding from 1 review