Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

509 questions · 514 findings · 44 reviews

No studies found 35 · 6.8%GRADE not reported 31 · 6%Very low 41 · 8%Low 149 · 29%Moderate 196 · 38.1%High 62 · 12.1%

Intervention not reported

Mortality, due to pneumonia · patients with chronic obstructive pulmonary disease

It is very uncertain whether the intervention changes mortality, due to pneumonia (very low certainty).

1 finding from 1 review

Intervention not reported

Non‐fatal, serious adverse events (all) · patients with chronic obstructive pulmonary disease

The intervention showed no clear difference in non‐fatal, serious adverse events (all) (moderate certainty).

1 finding from 1 review