Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

120 questions · 120 findings · 13 reviews · Gut

No studies found 19 · 15.8%GRADE not reported 17 · 14.2%Very low 50 · 41.7%Low 26 · 21.7%Moderate 8 · 6.7%High 0 · 0%

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