Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

213 questions · 220 findings · 27 reviews

No studies found 41 · 18.6%GRADE not reported 12 · 5.5%Very low 53 · 24.1%Low 90 · 40.9%Moderate 22 · 10%High 2 · 0.9%

Probiotics vs placebo

Withdrawals due to adverse events · induction of remission in Crohn's disease

It is very uncertain whether probiotics changes adverse events leading to withdrawal compared with placebo (very low certainty).

1 finding from 1 review

Probiotics vs placebo

Maintenance of clinical remission · Patients with quiescent ulcerative colitis

It is very uncertain whether probiotics changes maintenance of clinical remission (52 weeks) compared with placebo (very low certainty).

1 finding from 1 review