Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

50 questions · 50 findings · 15 reviews · Headline outcomes only

No studies found 9 · 18%GRADE not reported 2 · 4%Very low 15 · 30%Low 13 · 26%Moderate 7 · 14%High 4 · 8%

Intervention not reported

Exacerbations requiring oral corticosteroids 7.3‐month · people with asthma

The intervention showed no clear difference in exacerbations requiring oral corticosteroids 7.3‐month (low certainty).

1 finding from 1 review

Intervention not reported

Exacerbations requiring hospital admission 7.8‐month · people with asthma

The intervention showed no clear difference in exacerbations requiring hospital admission 7.8‐month (moderate certainty).

1 finding from 1 review