Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

135 questions · 145 findings · 18 reviews · Airways

No studies found 19 · 13.1%GRADE not reported 9 · 6.2%Very low 45 · 31%Low 38 · 26.2%Moderate 28 · 19.3%High 6 · 4.1%

Intervention vs usual care

Exacerbations (number of people experiencing ≥ 1 exacerbations) · COPD and at least one other long‐term condition

It is very uncertain whether intervention changes exacerbations ‐ number of people experiencing one or more  compared with usual care (very low certainty).

1 finding from 1 review