Findings

What do systematic reviews say?

2 questions · 2 findings · 1 reviews

Sort:Best matchNewest Highest certainty Download CSV

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 1 · 50%Low 0 · 0%Moderate 1 · 50%High 0 · 0%

Vitamin D vs placebo or no intervention

Low birthweight · pregnant women and their infants..

Vitamin D supplementation probably leads to lower low birthweight (less than 2500 g) compared with placebo or no intervention (moderate certainty).

1 finding from 1 review

Vitamin D supplementation for women during pregnancy 2019 · Cochrane Headline outcomes only
RR 0.55 [0.35, 0.87]
5 studies · 697 participants
Moderate

Vitamin D plus calcium vs placebo or no intervention

Low birthweight · pregnant women and their infants..

It is very uncertain whether vitamin D + calcium supplementation changes low birthweight (less than 2500 g) compared with placebo or no intervention (very low certainty).

1 finding from 1 review

Vitamin D supplementation for women during pregnancy 2019 · Cochrane Headline outcomes only
RR 0.68 [0.1, 4.55]
2 studies · 110 participants
Very low