Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,888 questions · 2,009 findings · 352 reviews

No studies found 224 · 11.1%GRADE not reported 265 · 13.2%Very low 551 · 27.4%Low 540 · 26.9%Moderate 311 · 15.5%High 118 · 5.9%