Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,126 questions · 1,225 findings · 111 reviews

No studies found 235 · 19.2%GRADE not reported 260 · 21.2%Very low 207 · 16.9%Low 271 · 22.1%Moderate 177 · 14.4%High 75 · 6.1%

Vitamin E vs placebo, no placebo or other supplements

Stillbirth · 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 stillbirth compared with placebo, no placebo or other supplements (moderate certainty).

1 finding from 1 review

Vitamin E vs placebo, no placebo or other supplements

Preterm birth · 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 preterm birth (less than 37 weeks' gestation) compared with placebo, no placebo or other supplements (high certainty).

1 finding from 1 review

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