Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

319 questions · 326 findings · 34 reviews · Airways

No studies found 21 · 6.4%GRADE not reported 22 · 6.7%Very low 20 · 6.1%Low 81 · 24.8%Moderate 132 · 40.5%High 50 · 15.3%

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

Hospital admission (exacerbation) · 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 hospital admission (exacerbation) compared with long‐acting beta2‐agonist alone (low 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 long‐acting beta2‐agonist alone

Quality of life SGRQ responder analysis at 6 months · addition to tiotropium versus either tiotropium or LABA alone for chronic obstructive pulmonary disease

Long‐acting beta2‐agonist plus tiotropium probably leads to higher quality of life SGRQ responder analysis at 6 months compared with long‐acting beta2‐agonist alone (moderate certainty).

1 finding from 1 review

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

Hospital admissions · 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 hospital admission (all cause) compared with long‐acting beta2‐agonist alone (moderate certainty).

1 finding from 1 review

LAMA add‐on vs long‐acting beta2‐agonists (LABA) add‐on

Exacerbations (OCS) · adults with asthma not well controlled on ICS

Long‐acting muscarinic antagonists (LAMA) add‐on showed no clear difference in exacerbations (OCS) compared with long‐acting beta2‐agonists (LABA) add‐on (low certainty).

1 finding from 1 review

LAMA add‐on vs long‐acting beta2‐agonists (LABA) add‐on

Serious adverse events 22 weeks · adults with asthma not well controlled on ICS

Long‐acting muscarinic antagonists (LAMA) add‐on showed no clear difference in serious adverse events 22 weeks compared with long‐acting beta2‐agonists (LABA) add‐on (low certainty).

1 finding from 1 review

LAMA add‐on vs long‐acting beta2‐agonists (LABA) add‐on

Hospital admission (exacerbation) · adults with asthma not well controlled on ICS

It is very uncertain whether long‐acting muscarinic antagonists (LAMA) add‐on changes exacerbations (hospital) compared with long‐acting beta2‐agonists (LABA) add‐on (very low certainty).

1 finding from 1 review

LAMA add‐on vs long‐acting beta2‐agonists (LABA) add‐on

Adverse events (all) · adults with asthma not well controlled on ICS

Long‐acting muscarinic antagonists (LAMA) add‐on showed no clear difference in adverse events (all) compared with long‐acting beta2‐agonists (LABA) add‐on (moderate certainty).

1 finding from 1 review

Long‐acting beta2‐agonists vs placebo

Quality of life St George's Respiratory Questionnaire (SGRQ) score · patients with chronic obstructive pulmonary disease

Long‐acting beta2‐agonists showed no clear difference in quality of life1 St George's Respiratory Questionnaire (SGRQ); lower… compared with placebo (moderate certainty).

1 finding from 1 review

Long‐acting beta2‐agonists vs placebo

Moderate exacerbations (course of antibiotics or oral steroids) · patients with chronic obstructive pulmonary disease

Long‐acting beta2‐agonists probably leads to lower moderate exacerbations (course of antibiotics or oral steroids) compared with placebo (moderate certainty).

1 finding from 1 review

Long‐acting beta2‐agonists vs placebo

Moderate‐to‐severe exacerbations (rate) · patients with chronic obstructive pulmonary disease

Long‐acting beta2‐agonists showed no clear difference in severe/moderate exacerbations (hospitalisation or course of… compared with placebo (moderate certainty).

1 finding from 1 review

Long‐acting beta2‐agonists vs placebo

Participants with one or more serious adverse event (non‐fatal) · patients with chronic obstructive pulmonary disease

Long‐acting beta2‐agonists showed no clear difference in participants with one or more serious adverse event (non‐fatal) compared with placebo (moderate certainty).

1 finding from 1 review