Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

411 questions · 420 findings · 42 reviews

No studies found 99 · 23.6%GRADE not reported 35 · 8.3%Very low 135 · 32.1%Low 114 · 27.1%Moderate 34 · 8.1%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