Cochrane · systematic review · CD002203

Macrolide antibiotics (including azithromycin) for cystic fibrosis

Southern, KW, Solis-Moya, A, Kurz, D, et al. · Cochrane Database of Systematic Reviews · 2024 · Cochrane Library

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
28
current version
GRADE rated
18
No studies
10
Included studies
NR
No studies 10 · 35.7%Ungraded 0 · 0%Very low 6 · 21.4%Low 0 · 0%Moderate 9 · 32.1%High 3 · 10.7%

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

Summary of findings ‐ oral azithromycin compared to placebo

Population: adults and children with cystic fibrosis
7 questions
OutcomeEffectEvidenceStatus / GRADE
FEV1 % predicted: mean change from baseline
Summary of findings ‐ oral azithromycin vs placebo
no estimate extracted4 studies · 549 participantsHigh
Pulmonary exacerbations: time to next exacerbation
Summary of findings ‐ oral azithromycin vs placebo
no estimate extracted4 studies · 796 participantsModerate
Downgraded: imprecision, inconsistency, indirectness
Adverse events: number of mild treatment‐related adverse events
Summary of findings ‐ oral azithromycin vs placebo
no estimate extracted4 studies · 748 participantsModerate
Downgraded: imprecision, inconsistency, indirectness
Hospitalisations: admissions to hospital
Summary of findings ‐ oral azithromycin vs placebo
no estimate extracted2 studies · 445 participantsHigh
New acquisition of CF pathogens: PA
Summary of findings ‐ oral azithromycin vs placebo
no estimate extracted2 studies · 282 participantsModerate
Downgraded: imprecision, inconsistency, indirectness
Need for additional antibiotics: participants needing extra IV antibiotics
Summary of findings ‐ oral azithromycin vs placebo
no estimate extracted3 studies · 527 participantsHigh
QoL: mean change in quality of life
Summary of findings ‐ oral azithromycin vs placebo
no estimate extracted1 study · 177 participantsModerate
Downgraded: imprecision, inconsistency, indirectness

Summary of findings ‐ high‐dose azithromycin compared to low‐dose azithromycin

Population: children with cystic fibrosis
7 questions
OutcomeEffectEvidenceStatus / GRADE
FEV1 % predicted:
Summary of findings ‐ high‐dose azithromycin vs low‐dose azithromycin
no estimate extracted1 study · 47 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Pulmonary exacerbations: rate of exacerbations per child per month
Summary of findings ‐ high‐dose azithromycin vs low‐dose azithromycin
no estimate extracted1 study · 47 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Adverse events
Summary of findings ‐ high‐dose azithromycin vs low‐dose azithromycin
no estimate extractedNRNo studies
Hospitalisations
Summary of findings ‐ high‐dose azithromycin vs low‐dose azithromycin
no estimate extractedNRNo studies
New acquisition of CF pathogens: PA
Summary of findings ‐ high‐dose azithromycin vs low‐dose azithromycin
no estimate extractedNRNo studies
Need for additional antibiotics
Summary of findings ‐ high‐dose azithromycin vs low‐dose azithromycin
no estimate extractedNRNo studies
QoL
Summary of findings ‐ high‐dose azithromycin vs low‐dose azithromycin
no estimate extractedNRNo studies

Summary of findings ‐ nebulised azithromycin compared to oral azithromycin

Population: children with cystic fibrosis
7 questions
OutcomeEffectEvidenceStatus / GRADE
FEV1 % predicted: mean change from baseline
Summary of findings ‐ nebulised azithromycin vs oral azithromycin
no estimate extracted1 study · 45 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Pulmonary exacerbations: time to next exacerbation
Summary of findings ‐ nebulised azithromycin vs oral azithromycin
no estimate extractedNRNo studies
Adverse events: number of treatment‐related adverse events
Summary of findings ‐ nebulised azithromycin vs oral azithromycin
no estimate extracted1 study · 45 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Hospitalisations
Summary of findings ‐ nebulised azithromycin vs oral azithromycin
no estimate extractedNRNo studies
New acquisition of CF pathogens: PA (mean change in PA count (log10 PA CFU/g sputum))
Summary of findings ‐ nebulised azithromycin vs oral azithromycin
no estimate extracted1 study · 45 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Need for additional antibiotics
Summary of findings ‐ nebulised azithromycin vs oral azithromycin
no estimate extractedNRNo studies
QoL: change in PEDsQL‐4 scale
Summary of findings ‐ nebulised azithromycin vs oral azithromycin
no estimate extracted1 study · 45 participantsVery low
Downgraded: risk of bias, imprecision, indirectness

Summary of findings ‐ weekly azithromycin compared to daily azithromycin

Population: adults and children with cystic fibrosis
7 questions
OutcomeEffectEvidenceStatus / GRADE
FEV1 % predicted: mean change % predicted
Summary of findings ‐ weekly azithromycin vs daily azithromycin
no estimate extracted1 study · 208 participantsModerate
Downgraded: imprecision
Pulmonary exacerbations: number of days to first exacerbation
Summary of findings ‐ weekly azithromycin vs daily azithromycin
no estimate extracted1 study · 208 participantsModerate
Downgraded: imprecision
Adverse events: number of treatment‐related adverse events
Summary of findings ‐ weekly azithromycin vs daily azithromycin
no estimate extracted1 study · 208 participantsModerate
Downgraded: imprecision
Hospitalisations: mean number of hospital admissions
Summary of findings ‐ weekly azithromycin vs daily azithromycin
no estimate extracted1 study · 208 participantsModerate
Downgraded: imprecision
New acquisition of CF pathogens: PA
Summary of findings ‐ weekly azithromycin vs daily azithromycin
no estimate extractedNRNo studies
Need for additional antibiotics
Summary of findings ‐ weekly azithromycin vs daily azithromycin
no estimate extractedNRNo studies
QoL: change in CFQ score
Summary of findings ‐ weekly azithromycin vs daily azithromycin
no estimate extracted1 study · 208 participantsModerate
Downgraded: imprecision