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%

Tiotropium + LABA/ICS combination vs tiotropium

Mortality (all‐cause) · patients with chronic obstructive pulmonary disease

Tiotropium + LABA/ICS combination showed no clear difference in mortality (all‐cause) compared with tiotropium (moderate certainty).

1 finding from 1 review

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