Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,973 questions · 3,072 findings · 410 reviews · Headline outcomes only

No studies found 559 · 18.2%GRADE not reported 143 · 4.7%Very low 654 · 21.3%Low 833 · 27.1%Moderate 683 · 22.2%High 200 · 6.5%

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

Intervention not reported

Non‐fatal, serious adverse pneumonia events (requiring hospital admission) · patients with chronic obstructive pulmonary disease

The intervention leads to higher non‐fatal, serious adverse pneumonia events (requiring hospital… (high certainty).

1 finding from 1 review

Intervention not reported

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

The intervention showed no clear difference in mortality, due to pneumonia (moderate 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) (high certainty).

1 finding from 1 review

Intervention not reported

Non‐fatal, serious adverse pneumonia events (requiring hospital admission) · patients with chronic obstructive pulmonary disease

The intervention showed no clear difference in non‐fatal, serious adverse pneumonia events (requiring hospital… (moderate certainty).

1 finding from 1 review