Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,751 questions · 12,775 findings · 807 reviews · Headline outcomes only

No studies found 3,413 · 26.7%GRADE not reported 709 · 5.5%Very low 3,483 · 27.3%Low 3,165 · 24.8%Moderate 1,628 · 12.7%High 377 · 3%

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Environmental interventions vs no intervention

Blood lead levels (continuous)Blood lead level at end of duration Scale: 0–30 · children (aged 0–6 years)
2 findings from 1 review

Rehabilitation interventions vs no intervention

Quality of life and participation ‐ mobility and navigation (Analysis 3.1) · stroke survivors with tactile perception disorders

Rehabilitation interventions showed no clear difference in quality of life and participation ‐ mobility and navigation… compared with no treatment or control; GRADE not reported.

1 finding from 1 review