Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,304 questions · 1,352 findings · 210 reviews

No studies found 230 · 17%GRADE not reported 163 · 12.1%Very low 269 · 19.9%Low 277 · 20.5%Moderate 291 · 21.5%High 122 · 9%