Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

360 questions · 370 findings · 102 reviews · Headline outcomes only

No studies found 48 · 13%GRADE not reported 12 · 3.2%Very low 76 · 20.5%Low 121 · 32.7%Moderate 84 · 22.7%High 29 · 7.8%

HFNC vs standard oxygen therapy

Treatment failure (escalation of respiratory therapy to NIV, NIPPV or invasive ventilation) Measured up to 28 days · adults in the ICU, requiring respiratory support

HFNC may leads to lower treatment failure (escalation of respiratory therapy to NIV, NIPPV… compared with standard oxygen therapy (low certainty).

1 finding from 1 review

HFNC vs standard oxygen therapy

In‐hospital mortality (up to 90 days; included studies reported in‐hospital mortality, and mortality up to 28 days and up to ICU discharge) · adults in the ICU, requiring respiratory support

HFNC showed no clear difference in in‐hospital mortality (up to 90 days; included studies reported… compared with standard oxygen therapy (moderate certainty).

1 finding from 1 review

HFNC vs standard oxygen therapy

Adverse events Respiratory infection (pneumonia) Nasal mucosa or skin trauma · adults in the ICU, requiring respiratory support

HFNC showed no clear difference in adverse events Respiratory infection (pneumonia) Nasal mucosa or… compared with standard oxygen therapy (moderate certainty).

1 finding from 1 review

Continuous positive airway pressure (CPAP) vs supplemental oxygen

Treatment failure (death or use of additional ventilatory support) · preterm infants with respiratory distress for initial respiratory support

It is very uncertain whether CPAP changes treatment failure (death or use of additional ventilatory support) compared with supplemental oxygen (very low certainty).

1 finding from 1 review

Non‐invasive ventilation vs supplemental oxygen or no treatment

Need for mechanical ventilation · patients with the management of transient tachypnea of the newborn

It is very uncertain whether non‐invasive respiratory support changes need for mechanical ventilation compared with supplemental oxygen or no treatment (very low certainty).

1 finding from 1 review

Non‐invasive ventilation vs supplemental oxygen or no treatment

All‐cause mortality · patients with the management of transient tachypnea of the newborn

It is very uncertain whether non‐invasive respiratory support changes all‐cause mortality compared with supplemental oxygen or no treatment (very low certainty).

1 finding from 1 review

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