Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

259 questions · 266 findings · 31 reviews

No studies found 56 · 21.1%GRADE not reported 14 · 5.3%Very low 67 · 25.2%Low 97 · 36.5%Moderate 29 · 10.9%High 3 · 1.1%

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