Findings

What do systematic reviews say?

6 questions · 6 findings · 1 reviews · Pregnancy and Childbirth

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 2 · 33.3%High 4 · 66.7%

Multiple micronutrients vs control (iron and/or folic acid)

Preterm birth · women during pregnancy

Multiple micronutrients showed no clear difference in preterm births compared with control (iron with or without folic acid) (moderate certainty).

1 finding from 1 review

Multiple‐micronutrient supplementation for women during pregnancy 2019 · Cochrane Headline outcomes only
RR 0.95 [0.9, 1.01]
18 studies · 91425 participants
Moderate

Multiple micronutrients vs control (iron and/or folic acid)

Small‐for‐gestational age · women during pregnancy

Multiple micronutrients probably leads to lower small‐for‐gestational age compared with control (iron with or without folic acid) (moderate certainty).

1 finding from 1 review

Multiple‐micronutrient supplementation for women during pregnancy 2019 · Cochrane Headline outcomes only
RR 0.92 [0.88, 0.97]
17 studies · 57348 participants
Moderate

Multiple micronutrients vs control (iron and/or folic acid)

Low birthweight · women during pregnancy

Multiple micronutrients leads to lower low birthweight compared with control (iron with or without folic acid) (high certainty).

1 finding from 1 review

Multiple‐micronutrient supplementation for women during pregnancy 2019 · Cochrane Headline outcomes only
RR 0.88 [0.85, 0.91]
18 studies · 68801 participants
High

Multiple micronutrients vs control (iron and/or folic acid)

Perinatal mortality · women during pregnancy

Multiple micronutrients showed no clear difference in perinatal mortality compared with control (iron with or without folic acid) (high certainty).

1 finding from 1 review

Multiple‐micronutrient supplementation for women during pregnancy 2019 · Cochrane Headline outcomes only
RR 1 [0.9, 1.11]
15 studies · 63922 participants
High

Multiple micronutrients vs control (iron and/or folic acid)

Stillbirth · women during pregnancy

Multiple micronutrients showed no clear difference in stillbirths compared with control (iron with or without folic acid) (high certainty).

1 finding from 1 review

Multiple‐micronutrient supplementation for women during pregnancy 2019 · Cochrane Headline outcomes only
RR 0.95 [0.86, 1.04]
17 studies · 97927 participants
High

Multiple micronutrients vs control (iron and/or folic acid)

Neonatal mortality · women during pregnancy

Multiple micronutrients showed no clear difference in neonatal mortality compared with control (iron with or without folic acid) (high certainty).

1 finding from 1 review

Multiple‐micronutrient supplementation for women during pregnancy 2019 · Cochrane Headline outcomes only
RR 1 [0.89, 1.12]
14 studies · 80964 participants
High