Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,756 questions · 11,779 findings · 747 reviews · Headline outcomes only

No studies found 3,205 · 27.2%GRADE not reported 628 · 5.3%Very low 3,261 · 27.7%Low 2,913 · 24.7%Moderate 1,453 · 12.3%High 319 · 2.7%

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Oral iron sulphate vs oral iron hydroxide polymaltose complex

Serious adverse events ‐ active or inactive disease (14 days) · IBD patients

It is very uncertain whether oral iron sulphate changes serious adverse events ‐ active or inactive disease (14 days) compared with oral iron hydroxide polymaltose complex (very low certainty).

1 finding from 1 review

IM erythropoietin + IV iron sucrose vs IV iron sucrose + IM placebo

Number of responders ‐ disease activity not stated (12 weeks) · IBD patients

IM erythropoietin + IV iron sucrose showed no clear difference in number of responders ‐ disease activity not stated (12 weeks) compared with IV iron sucrose + IM placebo (low certainty).

1 finding from 1 review