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Evidence found and GRADE certainty

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 2 · 33.3%Low 2 · 33.3%Moderate 2 · 33.3%High 0 · 0%

Any supplements containing iron and folic acid vs same supplements without iron nor folic acid (no iron nor folic acid or placebo)

Iron deficiency at term (as defined by trialists, based on any indicator of iron status at 37 wk gestation or more) · pregnant women

(Maternal outcomes) Any supplements containing iron and folic acid may leads to lower maternal iron deficiency at term (as defined by trialists, based on… compared with same supplements without iron nor folic acid (no iron nor folic acid… (low certainty).

1 finding from 1 review

Any supplements containing iron and folic acid vs same supplements without iron nor folic acid (no iron nor folic acid or placebo)

Maternal anaemia at term (Hb less than 110 g/L at 37 weeks' gestation or more) (ALL) · pregnant women

(Maternal outcomes) Any supplements containing iron and folic acid probably leads to lower maternal anaemia at term (Hb less than 110 g/L at 37 weeks'… compared with same supplements without iron nor folic acid (no iron nor folic acid… (moderate certainty).

1 finding from 1 review

Any supplements containing iron and folic acid vs same supplements without iron nor folic acid (no iron nor folic acid or placebo)

Side effects (any reported throughout the intervention period) (ALL) · pregnant women

(Maternal outcomes) Any supplements containing iron and folic acid probably leads to higher side effects (any reported throughout the intervention period) (ALL) compared with same supplements without iron nor folic acid (no iron nor folic acid… (moderate certainty).

1 finding from 1 review

Any supplements containing iron and folic acid vs same supplements without iron nor folic acid (no iron nor folic acid or placebo)

Maternal severe anaemia at any time during 2nd or 3rd trimester (Hb less than 70 g/L) · pregnant women

It is very uncertain whether (Maternal outcomes) Any supplements containing iron and folic acid changes maternal severe anaemia at any time during second and third… compared with same supplements without iron nor folic acid (no iron nor folic acid… (very low certainty).

1 finding from 1 review

Any supplements containing iron and folic acid vs same supplements without iron nor folic acid (no iron nor folic acid or placebo)

Infection during pregnancy (including urinary tract infections and others) (ALL) · pregnant women

It is very uncertain whether (Maternal outcomes) Any supplements containing iron and folic acid changes infection during pregnancy (including urinary tract infections) (ALL) compared with same supplements without iron nor folic acid (no iron nor folic acid… (very low certainty).

1 finding from 1 review