Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,756 questions · 13,493 findings · 1,305 reviews · Headline outcomes only

No studies found 2,594 · 19.2%GRADE not reported 728 · 5.4%Very low 2,868 · 21.3%Low 3,777 · 28%Moderate 2,620 · 19.4%High 906 · 6.7%

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Short‐acting inhaled beta‐2 agonists vs placebo

Number of exacerbations(as reported by number of hospitalisations and number of courses and days on antibiotics) · adults and children with cystic fibrosis

It is very uncertain whether short‐acting inhaled beta‐2 agonists changes number of exacerbations(as reported by number of hospitalisations… compared with placebo (very low certainty).

1 finding from 1 review

Short‐acting inhaled beta‐2 agonists vs placebo

Participant‐reported symptom score: cough, wheeze and exercise tolerance · adults and children with cystic fibrosis

It is very uncertain whether short‐acting inhaled beta‐2 agonists changes participant‐reported symptom score: cough, wheeze and exercise… compared with placebo (very low certainty).

1 finding from 1 review