Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

22 questions · 28 findings · 2 reviews · Airways

No studies found 3 · 10.7%GRADE not reported 0 · 0%Very low 0 · 0%Low 3 · 10.7%Moderate 13 · 46.4%High 9 · 32.1%

Antibiotics vs placebo

Exacerbations · Adults (aged 40 or over) with COPD presenting with 1 or more exacerbations in the previous year. The 2 larger studies (Albert 2011; Sethi…

Antibiotics probably leads to lower number of people with one or more exacerbations WMD of compared with placebo (moderate certainty).

1 finding from 1 review

Antibiotics vs placebo

Annual Exacerbation Rates · Adults (aged 40 or over) with COPD presenting with 1 or more exacerbations in the previous year. The 2 larger studies (Albert 2011; Sethi…

Antibiotics probably leads to lower rate of exacerbation per patient/year WMD of compared with placebo (moderate certainty).

1 finding from 1 review

Antibiotics vs placebo

All‐cause mortality WMD of · Adults (aged 40 or over) with COPD presenting with 1 or more exacerbations in the previous year. The 2 larger studies (Albert 2011; Sethi…

Antibiotics showed no clear difference in all‐cause mortality WMD of compared with placebo (moderate certainty).

1 finding from 1 review

Antibiotics vs placebo

Serious adverse events WMD of · Adults (aged 40 or over) with COPD presenting with 1 or more exacerbations in the previous year. The 2 larger studies (Albert 2011; Sethi…

Antibiotics showed no clear difference in serious adverse events WMD of compared with placebo (moderate certainty).

1 finding from 1 review

14 days on/off antibiotic regimen vs 14 days on/off placebo regimen

Exacerbation frequency · people with bronchiectasis

14 days on/off antibiotic regimen probably leads to lower exacerbation frequency compared with 14 days on/off placebo regimen (moderate certainty).

2 findings from 1 review

28 days on/off antibiotic regimen vs 28 days on/off placebo regimen

Pulmonary exacerbations: number of hospitalisations due to respiratory exacerbations · people with bronchiectasis

28 days on/off antibiotic regimen showed no clear difference in hospitalisation for pulmonary exacerbations compared with 28 days on/off placebo regimen (high certainty).

1 finding from 1 review

14 days on/off antibiotic regimen vs 28 days on/off antibiotic regimen

Exacerbation frequency · people with bronchiectasis

14 days on/off antibiotic regimen showed no clear difference in exacerbation frequency compared with 28 days on/off antibiotic regimen (moderate certainty).

2 findings from 1 review