Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

157 questions · 157 findings · 18 reviews · Airways

No studies found 10 · 6.4%GRADE not reported 7 · 4.5%Very low 9 · 5.7%Low 36 · 22.9%Moderate 68 · 43.3%High 27 · 17.2%

Tiotropium + LABA/ICS combination vs tiotropium

Non‐fatal serious adverse events · patients with chronic obstructive pulmonary disease

Tiotropium + LABA/ICS combination showed no clear difference in serious adverse events (non‐fatal) compared with tiotropium (low certainty).

1 finding from 1 review