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%

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

Serious adverse events 22 weeks · adults with asthma not well controlled on ICS

Long‐acting muscarinic antagonists (LAMA) add‐on showed no clear difference in serious adverse events 22 weeks compared with long‐acting beta2‐agonists (LABA) add‐on (low certainty).

1 finding from 1 review

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

Hospital admission (exacerbation) · adults with asthma not well controlled on ICS

It is very uncertain whether long‐acting muscarinic antagonists (LAMA) add‐on changes exacerbations (hospital) compared with long‐acting beta2‐agonists (LABA) add‐on (very low certainty).

1 finding from 1 review

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

Adverse events (all) · adults with asthma not well controlled on ICS

Long‐acting muscarinic antagonists (LAMA) add‐on showed no clear difference in adverse events (all) compared with long‐acting beta2‐agonists (LABA) add‐on (moderate certainty).

1 finding from 1 review

As‐required FABA/ICS inhalers vs regular inhaled steroid

Rate of exacerbations requiring systemic corticosteroids · mild asthma

As‐required FABA/ICS inhalers showed no clear difference in exacerbations requiring systemic steroid compared with regular inhaled steroid (low certainty).

1 finding from 1 review