Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

529 questions · 535 findings · 63 reviews · Airways

No studies found 41 · 7.7%GRADE not reported 28 · 5.2%Very low 35 · 6.5%Low 151 · 28.2%Moderate 204 · 38.1%High 76 · 14.2%

Intervention not reported

Patients with ≥ 1 exacerbations requiring oral corticosteroids Duration of trials: 6 to 16 weeks · adults and adolescents with persistent asthma

The intervention probably leads to lower patients with ≥ 1 exacerbations requiring oral corticosteroids… (moderate certainty).

1 finding from 1 review

Intervention not reported

Participants with ≥ 1 exacerbation requiring oral corticosteroids Duration of trials: 8 to 24 weeks · adults and adolescents with persistent asthma

The intervention showed no clear difference in participants with ≥ 1 exacerbation requiring oral corticosteroids… (low certainty).

1 finding from 1 review

Intervention not reported

Patients with ≥ 1 exacerbation requiring oral corticosteroids Duration of trials: 8 to 13 weeks · adults and adolescents with persistent asthma

The intervention showed no clear difference in patients with ≥ 1 exacerbation requiring oral corticosteroids… (moderate certainty).

1 finding from 1 review

Stopping LABA vs continuing use of LABA+ICS

Rate of exacerbations requiring systemic corticosteroids · adults with asthma well controlled on LABA and ICS

Stopping LABA showed no clear difference in exacerbation: systemic corticosteroids 17 weeks compared with continuing use of LABA+ICS (moderate certainty).

1 finding from 1 review

Anti‐leukotrienes & ICS vs same‐dose ICS

Number of participants experiencing one or more episode requiring treatment with oral steroids · children with asthma

Anti‐leukotrienes & ICS may leads to lower participants with one or more exacerbations requiring oral… compared with same dose ICS (low certainty).

1 finding from 1 review

Anti‐leukotrienes & ICS vs ICS dose increase

Number of participants experiencing one or more episode requiring treatment with oral steroids · children with asthma

Anti‐leukotrienes & ICS may leads to lower participants with one or more exacerbations requiring oral… compared with higher dose ICS (low certainty).

1 finding from 1 review

Intermittent 'as needed' ICS vs daily ICS

Number of participants experiencing one or more episode requiring treatment with oral steroids · Children and adults with persistent asthma.

Intermittent 'as needed' ICS showed no clear difference in patients with 1 or more exacerbations requiring oral corticosteroids… compared with daily ICS (low certainty).

1 finding from 1 review

Vitamin D vs placebo

Rate of exacerbations requiring systemic corticosteroids · children and adults with predominantly mild to moderate asthma

Summary of findings table ‐ Vitamin D showed no clear difference in proportion of participants with one or more exacerbations treated… compared with placebo (high certainty).

1 finding from 1 review

Mepolizumab subcutaneous (SC) vs placebo

Rate of clinically significant exacerbations requiring systemic corticosteroids · people with asthma

Mepolizumab subcutaneous (SC) leads to lower rate of clinically significant exacerbations requiring systemic… compared with placebo (high certainty).

1 finding from 1 review

Reslizumab intravenous (IV) vs placebo

Rate of clinically significant exacerbations requiring systemic corticosteroids · people with asthma

Reslizumab intravenous (IV) leads to lower rate of clinically significant exacerbations requiring systemic… compared with placebo (high certainty).

1 finding from 1 review

Reslizumab subcutaneous (SC) vs placebo

Rate of clinically significant exacerbations requiring systemic corticosteroids · people with asthma

Reslizumab subcutaneous (SC) showed no clear difference in rate of clinically significant exacerbations requiring systemic… compared with placebo (high certainty).

1 finding from 1 review

Benralizumab subcutaneous (SC) vs placebo

Rate of clinically significant exacerbations requiring systemic corticosteroids · people with asthma

Benralizumab subcutaneous (SC) leads to lower rate of clinically significant exacerbations requiring systemic… compared with placebo (high certainty).

1 finding from 1 review

Mepolizumab intravenous (IV) vs placebo

Rate of clinically significant exacerbations requiring systemic corticosteroids · people with asthma

Mepolizumab intravenous (IV) leads to lower rate of clinically significant exacerbations requiring systemic… compared with placebo (high certainty).

1 finding from 1 review