Findings

What do systematic reviews say?

3 questions · 3 findings · 1 reviews · Pregnancy and Childbirth

Sort:Best matchNewest Highest certainty Download CSV

No studies found 2 · 66.7%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 1 · 33.3%High 0 · 0%

Vitamin A plus iron plus folate vs iron plus folate

Any adverse effects · pregnant women

The review found no eligible studies for this question.

1 finding from 1 review

Vitamin supplementation for preventing miscarriage 2016 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vitamin E + vitamin C vs placebo

Any adverse effects of vitamin supplementation sufficient to stop supplementation · pregnant women

Vitamin C and vitamin E showed no clear difference in any adverse effects of vitamin supplementation sufficient to stop… compared with placebo (moderate certainty).

1 finding from 1 review

Vitamin supplementation for preventing miscarriage 2016 · Cochrane Headline outcomes only
RR 1.16 [0.39, 3.41]
1 study · 739 participants
Moderate

Multivitamin plus iron plus folate vs iron plus folate

Any adverse effects · pregnant women

The review found no eligible studies for this question.

1 finding from 1 review

Vitamin supplementation for preventing miscarriage 2016 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found