Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

30 questions · 30 findings · 6 reviews · Airways

No studies found 0 · 0%GRADE not reported 2 · 6.7%Very low 9 · 30%Low 13 · 43.3%Moderate 6 · 20%High 0 · 0%

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

Intervention not reported

Unscheduled healthcare visits 6.2‐month · people with asthma

It is very uncertain whether the intervention changes unscheduled healthcare visits 6.2‐month (very low certainty).

1 finding from 1 review