Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,411 questions · 2,571 findings · 265 reviews

No studies found 543 · 21.1%GRADE not reported 169 · 6.6%Very low 676 · 26.3%Low 731 · 28.4%Moderate 399 · 15.5%High 53 · 2.1%

Feedback device vs control versus usual care

Correct inhaler technique · people with asthma

Feedback device may leads to higher correct inhaler technique 4‐Week compared with control versus usual care (low certainty).

2 findings from 1 review