Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

695 questions · 728 findings · 63 reviews · Headline outcomes only

No studies found 219 · 30.1%GRADE not reported 55 · 7.6%Very low 194 · 26.6%Low 136 · 18.7%Moderate 90 · 12.4%High 34 · 4.7%

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

Failure to maintain clinical or endoscopic remission · Patients with quiescent ulcerative colitis

Oral 5‐aminosalicylic acid showed no clear difference in failure to maintain clinical or endoscopic remission compared with comparator 5‐aminosalicylic acid formulation (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

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

Exclusion/withdrawal after entry · Patients with quiescent ulcerative colitis

Oral 5‐aminosalicylic acid showed no clear difference in exclusion/withdrawal after entry compared with comparator 5‐aminosalicylic acid formulation (moderate certainty).

1 finding from 1 review