Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

402 questions · 411 findings · 41 reviews

No studies found 99 · 24.1%GRADE not reported 32 · 7.8%Very low 132 · 32.1%Low 112 · 27.3%Moderate 33 · 8%High 3 · 0.7%

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