Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,270 questions · 1,480 findings · 174 reviews

No studies found 252 · 17%GRADE not reported 405 · 27.4%Very low 301 · 20.3%Low 284 · 19.2%Moderate 174 · 11.8%High 64 · 4.3%