Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,256 questions · 2,339 findings · 262 reviews

No studies found 555 · 23.7%GRADE not reported 398 · 17%Very low 572 · 24.5%Low 476 · 20.4%Moderate 240 · 10.3%High 98 · 4.2%