Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,661 questions · 2,751 findings · 453 reviews

No studies found 593 · 21.6%GRADE not reported 277 · 10.1%Very low 538 · 19.6%Low 712 · 25.9%Moderate 516 · 18.8%High 115 · 4.2%

Proton pump inhibitors (PPI) vs control

Increase in the number of participants with linear/micronodular (focal) hyperplasia, comparing final biopsies with baseline biopsies · people with pre‐malignant lesions

Proton pump inhibitor may leads to higher increase in the number of participants with linear/micronodular… compared with control (low certainty).

1 finding from 1 review

Mometasone/formoterol (MF/F) vs placebo

Adverse events at study endpoint · patients with chronic obstructive pulmonary disease

Mometasone/formoterol (MF/F) showed no clear difference in adverse event—any—400/103 Duration of six months compared with placebo (low certainty).

2 findings from 1 review

Mometasone/formoterol (MF/F) vs placebo

Adverse events—serious—400/103 Duration of six months · patients with chronic obstructive pulmonary disease

Mometasone/formoterol (MF/F) showed no clear difference in adverse events—serious—400/103 Duration of six months compared with placebo (low certainty).

1 finding from 1 review

Mometasone/formoterol (MF/F) vs placebo

Adverse events—serious—200/103 Duration of six months · patients with chronic obstructive pulmonary disease

Mometasone/formoterol (MF/F) showed no clear difference in adverse events—serious—200/103 Duration of six months compared with placebo (low certainty).

1 finding from 1 review

Combined inhalers vs placebo (outcomes

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

Combined inhalers probably leads to lower participants with at least one exacerbation Duration of six months3 compared with placebo (primary outcomes) (moderate certainty).

1 finding from 1 review

Combined inhalers vs placebo (outcomes

Hospitalisations due to COPD exacerbations · COPD

Combined inhalers showed no clear difference in hospitalisations due to COPD exacerbations Duration of 18 months3 compared with placebo (primary outcomes) (low certainty).

1 finding from 1 review