Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

885 questions · 903 findings · 72 reviews

No studies found 106 · 11.7%GRADE not reported 45 · 5%Very low 114 · 12.6%Low 238 · 26.4%Moderate 314 · 34.8%High 86 · 9.5%

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

Combination of anticholinergics + beta2‐agonists vs B2‐agonists alone

Asthma clinical scores · children hospitalised with an acute asthma exacerbation

Combination of anticholinergics + beta2‐agonists showed no clear difference in asthma clinical scores compared with beta2‐agonists alone (moderate certainty).

1 finding from 1 review