Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,315 questions · 23,557 findings · 2,311 reviews

No studies found 4,183 · 17.8%GRADE not reported 3,930 · 16.7%Very low 5,371 · 22.8%Low 5,787 · 24.6%Moderate 3,320 · 14.1%High 966 · 4.1%

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Prebiotic vs placebo

Withdrawals due to adverse events · people with mild‐to‐moderate disease (Rachmilewitz index) or active disease (SCCAI score of 4 to 10)

It is very uncertain whether prebiotics changes withdrawals due to adverse events (14 days to 2 or 3 months) compared with placebo (very low certainty).

1 finding from 1 review

Prednisone vs placebo or supportive treatment

Any continuing kidney disease at 3 months (study with high risk of bias excluded) · patients with IgAV

Prednisone showed no clear difference in children with any continuing kidney disease at 3 months compared with placebo or supportive treatment (moderate certainty).

2 findings from 1 review

Prednisone vs placebo or supportive treatment

Any continuing kidney disease at 12 months (study with high risk of bias excluded) · patients with IgAV

Prednisone showed no clear difference in children with any continuing kidney disease at 12 months compared with placebo or supportive treatment (low certainty).

2 findings from 1 review

Pregabalin vs placebo

50% or greater reduction in seizure frequency · people with drug‐resistant focal epilepsy

Pregabalin may leads to higher 50% or greater reduction in seizure frequency ‐ ITT analysis compared with placebo (low certainty).

3 findings from 1 review

Pregabalin vs placebo

Adverse effects: headache · people with drug‐resistant focal epilepsy

It is very uncertain whether pregabalin changes adverse effect: headache compared with placebo (very low certainty).

1 finding from 1 review

Pregabalin vs active comparators

50% or greater reduction in seizure frequency · people with drug‐resistant focal epilepsy

Pregabalin showed no clear difference in 50% or greater reduction in seizurefrequency compared with active comparators (low certainty).

3 findings from 1 review