Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,454 questions · 3,562 findings · 816 reviews · Headline outcomes only

No studies found 538 · 15.1%GRADE not reported 239 · 6.7%Very low 933 · 26.2%Low 1,041 · 29.2%Moderate 612 · 17.2%High 199 · 5.6%

Azithromycin vs placebo or usual care

Clinical worsening: need for invasive mechanical ventilation, or death at up to day 28 · people with moderate to severe disease (WHO scale 4–9); all studies contributing results to the summary of findings table included people…

Azithromycin showed no clear difference in worsening of clinical status: participants with clinical… compared with placebo or standard of care alone (moderate certainty).

1 finding from 1 review

Azithromycin vs placebo or usual care

Clinical improvement: discharged alive ( · people with moderate to severe disease (WHO scale 4–9); all studies contributing results to the summary of findings table included people…

Azithromycin showed no clear difference in improvement of clinical status: participants discharged alive at day… compared with placebo or standard of care alone (moderate certainty).

1 finding from 1 review

Azithromycin vs placebo or usual care

All‐cause mortality at day 28 · all trials contributing results to the summary of findings table included people with mild disease (WHO scale 1 to 3)§

Azithromycin showed no clear difference in all‐cause mortality at day 28 compared with placebo or standard of care alone (low certainty).

1 finding from 1 review

Azithromycin vs placebo or usual care

Admission to hospital or death within 28 days · all trials contributing results to the summary of findings table included people with mild disease (WHO scale 1 to 3)§

Azithromycin showed no clear difference in admission to hospital or death within 28 days compared with placebo or standard of care alone (low certainty).

1 finding from 1 review

Carotid artery stenting vs endarterectomy

Death or any stroke between randomisation and 30 days after treatment · people with symptomatic carotid stenosis

Carotid artery stenting leads to higher death or any stroke between randomisation and 30 days after treatment compared with endarterectomy (high certainty).

1 finding from 1 review