Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

176 questions · 176 findings · 20 reviews

No studies found 21 · 11.9%GRADE not reported 7 · 4%Very low 17 · 9.7%Low 36 · 20.5%Moderate 68 · 38.6%High 27 · 15.3%

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