Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

637 questions · 674 findings · 79 reviews · Gut

No studies found 116 · 17.2%GRADE not reported 14 · 2.1%Very low 133 · 19.7%Low 225 · 33.4%Moderate 145 · 21.5%High 41 · 6.1%

Etrolizumab vs placebo

Failure to induce clinical remission at end of study · patients with induction of remission in ulcerative colitis

Etrolizumab probably leads to lower failure to enter clinical remission at week 10 compared with placebo (moderate certainty).

2 findings from 1 review

Etrolizumab vs placebo

Failure to respond at endpoint (6‐12 weeks) · patients with induction of remission in ulcerative colitis

Etrolizumab showed no clear difference in failure to respond at week 10 compared with placebo (moderate certainty).

1 finding from 1 review

Etrolizumab vs placebo

Failure to induce endoscopic remission · patients with induction of remission in ulcerative colitis

Etrolizumab showed no clear difference in failure to enter endoscopic remission at week 6 compared with placebo (moderate certainty).

2 findings from 1 review

Budesonide 6 mg vs placebo

Remission · Participants with Crohn's disease in remission

Budesonide 6 mg showed no clear difference in continued remission at 3 months compared with placebo (low certainty).

3 findings from 1 review

Budesonide 3 mg vs placebo

Remission · Participants with Crohn's disease in remission

Budesonide 3 mg probably leads to higher continued remission at 3 months compared with placebo (moderate certainty).

3 findings from 1 review

Methotrexate vs placebo

Failure to enter remission or possible remission at 16 weeks (Arora 1999) · adult patients with refractory Crohn's disease

Methotrexate showed no clear difference in failure to enter remission or possible remission at 16 weeks (Arora… compared with placebo (low certainty).

3 findings from 1 review

Methotrexate vs placebo

Withdrawals due to adverse events · adult patients with refractory Crohn's disease

Methotrexate may leads to higher withdrawal due to adverse event (Feagan 1995) compared with placebo (low certainty).

3 findings from 1 review

Methotrexate vs placebo

Remission and complete withdrawal from steroids · patients with induction of remission in ulcerative colitis

Methotrexate showed no clear difference in remission and complete withdrawal from steroids compared with placebo (low certainty).

1 finding from 1 review

Tranexamic acid vs placebo

Thromboembolic events · patients with upper gastrointestinal bleeding

Tranexamic acid probably leads to higher any thromboembolic event Clinical and radiological assessment compared with placebo (moderate certainty).

1 finding from 1 review

Tranexamic acid vs placebo

Surgery Number of participants who underwent surgery · patients with upper gastrointestinal bleeding

Tranexamic acid probably leads to lower surgery Number of participants who underwent surgery compared with placebo (moderate certainty).

1 finding from 1 review