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Evidence found and GRADE certainty

59 questions · 61 findings · 3 reviews · Pregnancy and Childbirth · Headline outcomes only

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No studies found 14 · 23%GRADE not reported 6 · 9.8%Very low 18 · 29.5%Low 18 · 29.5%Moderate 5 · 8.2%High 0 · 0%

Intravenous iron with oral iron vs oral iron

Persistent anaemia symptoms Reported by the women · women with postpartum iron deficiency anaemia

It is very uncertain whether intravenous iron with oral iron changes persistent anaemia symptoms ‐ 1 week Visual Analogue Scale ≥ 7 compared with oral iron (Comparison 6) (very low certainty).

3 findings from 1 review

Oral iron vs placebo (Comparison 3)

All gastrointestinal symptoms Reported by the patients · women with postpartum iron deficiency anaemia

It is very uncertain whether oral iron changes all gastrointestinal symptoms Reported by the patients compared with placebo (Comparison 3) (very low certainty).

1 finding from 1 review

Any supplements containing iron vs same supplements without iron or no treatment/placebo (no iron 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 may leads to lower maternal iron deficiency at term (as defined by as defined by… compared with same supplements without iron or no treatment/placebo (no iron or… (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)

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