Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

65 questions · 65 findings · 9 reviews · Gut

No studies found 8 · 12.3%GRADE not reported 1 · 1.5%Very low 16 · 24.6%Low 25 · 38.5%Moderate 13 · 20%High 2 · 3.1%

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

Oral 5‐aminosalicylic acid vs 5‐aminosalicylic acid (5‐ASA) (mesalazine)

Withdrawals due to adverse events · Patients with quiescent ulcerative colitis

It is very uncertain whether oral 5‐aminosalicylic acid changes withdrawal due to adverse events compared with comparator 5‐aminosalicylic acid formulation (very low certainty).

1 finding from 1 review