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Evidence found and GRADE certainty

4 questions · 4 findings · 2 reviews · Pregnancy and Childbirth

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 3 · 75%Moderate 0 · 0%High 1 · 25%

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 D + calcium + other vitamins and minerals vs calcium + other vitamins and minerals (but no vitamin D)

Preterm birth · pregnant women and their infants..

Vitamin D + calcium + other vitamins and minerals showed no clear difference in preterm birth (less than 37 weeks' gestation) compared with calcium + other vitamins and minerals (but no vitamin D) (low certainty).

1 finding from 1 review