Cochrane · systematic review · CD013254

Intermittent prophylactic antibiotics for bronchiectasis

Spencer, S, Donovan, T, Chalmers, JD, et al. · Cochrane Database of Systematic Reviews · 2022 · Cochrane Library

AirwaysAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
21
current version
GRADE rated
18
No studies
3
Included studies
NR
No studies 3 · 14.3%Ungraded 0 · 0%Very low 0 · 0%Low 3 · 14.3%Moderate 7 · 33.3%High 8 · 38.1%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

14 days on/off antibiotic regimen compared to 14 days on/off placebo regimen

Population: people with bronchiectasis
7 questions
OutcomeEffectEvidenceStatus / GRADE
Exacerbation frequency
14 days on/off antibiotic regimen vs 14 days on/off placebo regimen
RR 0.75 [0.61, 0.93]NRModerate
Downgraded: inconsistency
Exacerbation frequency
14 days on/off antibiotic regimen vs 14 days on/off placebo regimen
no estimate extractedNRModerate
Downgraded: inconsistency
Serious adverse events
14 days on/off antibiotic regimen vs 14 days on/off placebo regimen
OR 0.92 [0.63, 1.33]NRHigh
Antibiotic resistance
14 days on/off antibiotic regimen vs 14 days on/off placebo regimen
OR 2.14 [1.36, 3.35]NRHigh
Frequency of hospital admissions for pulmonary exacerbations ‐ not measured
14 days on/off antibiotic regimen vs 14 days on/off placebo regimen
no estimate extractedNRNo studies
Health‐related quality of life
14 days on/off antibiotic regimen vs 14 days on/off placebo regimen
no estimate extractedNRHigh
Health‐related quality of life
14 days on/off antibiotic regimen vs 14 days on/off placebo regimen
no estimate extractedNRModerate
Downgraded: inconsistency

28 days on/off antibiotic regimen compared to 28 days on/off placebo regimen

Population: people with bronchiectasis
7 questions
OutcomeEffectEvidenceStatus / GRADE
Exacerbation frequency
28 days on/off antibiotic regimen vs 28 days on/off placebo regimen
RR 0.92 [0.82, 1.02]NRHigh
Exacerbation frequency
28 days on/off antibiotic regimen vs 28 days on/off placebo regimen
no estimate extractedNRLow
Downgraded: imprecision, inconsistency
Serious adverse events
28 days on/off antibiotic regimen vs 28 days on/off placebo regimen
OR 1 [0.68, 1.46]NRLow
Downgraded: risk of bias, imprecision, inconsistency
Antibiotic resistance
28 days on/off antibiotic regimen vs 28 days on/off placebo regimen
OR 2.2 [1.42, 3.42]NRHigh
Hospitalisation for pulmonary exacerbations
28 days on/off antibiotic regimen vs 28 days on/off placebo regimen
OR 0.79 [0.49, 1.29]NRHigh
Health‐related quality of life
28 days on/off antibiotic regimen vs 28 days on/off placebo regimen
no estimate extractedNRModerate
Downgraded: risk of bias, imprecision
Health‐related quality of life
28 days on/off antibiotic regimen vs 28 days on/off placebo regimen
no estimate extractedNRLow
Downgraded: inconsistency

14 days on/off antibiotic regimen compared to 28 days on/off antibiotic regimen

Population: people with bronchiectasis
7 questions
OutcomeEffectEvidenceStatus / GRADE
Exacerbation frequency
14 days on/off antibiotic regimen vs 28 days on/off antibiotic regimen
RR 1.02 [0.84, 1.24]NRModerate
Downgraded: inconsistency
Exacerbation frequency
14 days on/off antibiotic regimen vs 28 days on/off antibiotic regimen
no estimate extractedNRNo studies
Serious adverse events
14 days on/off antibiotic regimen vs 28 days on/off antibiotic regimen
OR 0.83 [0.37, 1.86]NRModerate
Downgraded: inconsistency
Antibiotic resistance
14 days on/off antibiotic regimen vs 28 days on/off antibiotic regimen
OR 1 [0.68, 1.48]NRModerate
Downgraded: inconsistency
Frequency of hospital admissions for pulmonary exacerbations ‐ not measured
14 days on/off antibiotic regimen vs 28 days on/off antibiotic regimen
no estimate extractedNRNo studies
Health‐related quality of life
14 days on/off antibiotic regimen vs 28 days on/off antibiotic regimen
no estimate extractedNRHigh
Health‐related quality of life
14 days on/off antibiotic regimen vs 28 days on/off antibiotic regimen
no estimate extractedNRHigh