Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

974 questions · 987 findings · 137 reviews

No studies found 182 · 18.4%GRADE not reported 90 · 9.1%Very low 165 · 16.7%Low 312 · 31.6%Moderate 163 · 16.5%High 75 · 7.6%