Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

25 questions · 26 findings · 12 reviews · Headline outcomes only

No studies found 3 · 11.5%GRADE not reported 2 · 7.7%Very low 5 · 19.2%Low 9 · 34.6%Moderate 6 · 23.1%High 1 · 3.8%

Intervention not reported

Adherence to asthma policies 6 months to 1 year · school staff
1 finding from 1 review