Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

188 questions · 194 findings · 102 reviews

No studies found 26 · 13.4%GRADE not reported 14 · 7.2%Very low 35 · 18%Low 56 · 28.9%Moderate 52 · 26.8%High 11 · 5.7%

Summary of findings table ‐ immunostimulant vs placebo

Mortality (all‐cause) · adults with chronic bronchitis or chronic obstructive pulmonary disease

Summary of findings table ‐ immunostimulant showed no clear difference in mortality (all‐cause) compared with placebo (moderate certainty).

1 finding from 1 review

Remote monitoring plus usual care vs usual care

Mortality (all‐cause) · patients with chronic obstructive pulmonary disease

It is very uncertain whether remote monitoring plus usual care changes mortality (all‐cause) compared with usual care (very low certainty).

1 finding from 1 review

Once‐daily ICS/LABA combined inhalers vs once‐daily LAMA

Mortality (all‐cause) · patients with chronic obstructive pulmonary disease

It is very uncertain whether once‐daily ICS/LABA combined inhalers changes mortality (all‐cause) compared with once‐daily LAMA (very low certainty).

1 finding from 1 review

Tiotropium + LABA/ICS combination vs tiotropium

Mortality (all‐cause) · patients with chronic obstructive pulmonary disease

Tiotropium + LABA/ICS combination showed no clear difference in mortality (all‐cause) compared with tiotropium (moderate certainty).

1 finding from 1 review

Long‐acting beta2‐agonist plus tiotropium vs long‐acting beta2‐agonist alone

Mortality (all cause) · addition to tiotropium versus either tiotropium or LABA alone for chronic obstructive pulmonary disease

Long‐acting beta2‐agonist plus tiotropium showed no clear difference in mortality (all cause) compared with long‐acting beta2‐agonist alone (low certainty).

1 finding from 1 review

Long‐acting beta2‐agonist plus tiotropium vs tiotropium

Mortality (all cause) · addition to tiotropium versus either tiotropium or LABA alone for chronic obstructive pulmonary disease

Long‐acting beta2‐agonist plus tiotropium showed no clear difference in mortality (all cause) compared with tiotropium alone (low certainty).

1 finding from 1 review

Tiotropium vs ipratropium

Mortality (all‐cause) · chronic obstructive pulmonary disease (COPD). Participants in included studies had an average baseline FEV1 of around 40% predicted and…

Tiotropium showed no clear difference in mortality (all‐cause) compared with ipratropium (moderate certainty).

1 finding from 1 review

Tiotropium vs long‐acting beta‐agonists

Mortality (all‐cause) · patients with stable chronic obstructive pulmonary disease and > 10 pack years smoking history

It is very uncertain whether tiotropium changes mortality (all‐cause) compared with long‐acting beta‐agonists (very low certainty).

1 finding from 1 review

Rescue high‐frequency jet ventilation vs conventional ventilation

Mortality before cross‐over · preterm infants with severe pulmonary dysfunction

Rescue high‐frequency jet ventilation probably leads to lower mortality before cross‐over compared with conventional ventilation (moderate certainty).

1 finding from 1 review

Intervention not reported

Mortality, due to pneumonia · patients with chronic obstructive pulmonary disease

It is very uncertain whether the intervention changes mortality, due to pneumonia (very low certainty).

1 finding from 1 review

Intervention not reported

Mortality, due to pneumonia · patients with chronic obstructive pulmonary disease

The intervention showed no clear difference in mortality, due to pneumonia (moderate certainty).

1 finding from 1 review