Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,121 questions · 2,186 findings · 242 reviews

No studies found 493 · 22.6%GRADE not reported 158 · 7.2%Very low 600 · 27.4%Low 474 · 21.7%Moderate 364 · 16.7%High 97 · 4.4%