Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,234 questions · 2,325 findings · 216 reviews · Airways

No studies found 249 · 10.7%GRADE not reported 107 · 4.6%Very low 276 · 11.9%Low 751 · 32.3%Moderate 718 · 30.9%High 224 · 9.6%

Vitamin D vs placebo

Patients with severe exacerbations (requiring hospitalisation or ER visit) · 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 requiring… compared with placebo (moderate certainty).

1 finding from 1 review

Vitamin D vs placebo

Proportion of participants with one or more serious adverse events due to any cause · 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 serious adverse events… compared with placebo (high certainty).

1 finding from 1 review

Vitamin D vs placebo

Withdrawals (parallel group trials/first arm cross‐over trials) · children and adults with predominantly mild to moderate asthma

Summary of findings table ‐ Vitamin D showed no clear difference in withdrawals from trial compared with placebo (high certainty).

1 finding from 1 review

Triple therapy vs LABA/LAMA combination

Respiratory HRQoL measured by SGRQ, ≥ 4‐point decrease from baseline (lower scores indicate better HRQoL) · stable COPD

Triple therapy leads to higher respiratory HRQoL measured by SGRQ, ≥ 4‐point decrease from baseline… compared with LABA/LAMA combination (high certainty).

1 finding from 1 review

LABA/LAMA vs LABA plus inhaled corticosteroid (ICS)

Exacerbations (number of people experiencing ≥ 1 exacerbations) · stable COPD

Long‐acting muscarinic antagonist (LAMA) plus long‐acting… showed no clear difference in exacerbations (number of people experiencing ≥ 1 exacerbations) compared with LABA plus inhaled corticosteroid (ICS) (moderate certainty).

1 finding from 1 review

LABA/LAMA vs LABA plus inhaled corticosteroid (ICS)

Number of participants experiencing any serious adverse events · stable COPD

Long‐acting muscarinic antagonist (LAMA) plus long‐acting… showed no clear difference in serious adverse events (number of people experiencing ≥ 1 SAEs) compared with LABA plus inhaled corticosteroid (ICS) (high certainty).

1 finding from 1 review

LABA/LAMA vs LABA plus inhaled corticosteroid (ICS)

Change in SGRQ total score · stable COPD

Long‐acting muscarinic antagonist (LAMA) plus long‐acting… showed no clear difference in quality of life as measured by SGRQ total score change from baseline… compared with LABA plus inhaled corticosteroid (ICS) (moderate certainty).

1 finding from 1 review

LABA/LAMA vs LABA plus inhaled corticosteroid (ICS)

Change in baseline trough FEV1 · stable COPD

Long‐acting muscarinic antagonist (LAMA) plus long‐acting… probably leads to higher trough FEV1 change from baseline compared with LABA plus inhaled corticosteroid (ICS) (moderate certainty).

1 finding from 1 review