Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,163 questions · 1,209 findings · 133 reviews · Headline outcomes only

No studies found 176 · 14.6%GRADE not reported 47 · 3.9%Very low 241 · 19.9%Low 323 · 26.7%Moderate 315 · 26.1%High 107 · 8.9%

Stopping LABA vs continuing use of LABA+ICS

Serious adverse events 17 weeks · adults with asthma well controlled on LABA and ICS

Stopping LABA showed no clear difference in serious adverse events 17 weeks compared with continuing use of LABA+ICS (moderate certainty).

1 finding from 1 review

ICS + LAMA add‐on vs ICS dose increase

Mean exacerbations requiring a course of oral corticosteroids · adults with asthma

ICS + LAMA add‐on showed no clear difference in exacerbations requiring a course of OCSa 14 weeks compared with ICS dose increase (low certainty).

1 finding from 1 review

LAMA add‐on vs long‐acting beta2‐agonists (LABA) add‐on

Exacerbations (OCS) · adults with asthma not well controlled on ICS

Long‐acting muscarinic antagonists (LAMA) add‐on showed no clear difference in exacerbations (OCS) compared with long‐acting beta2‐agonists (LABA) add‐on (low certainty).

1 finding from 1 review