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Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

249 questions in 68 reviews · Airways

current versions
No studies 249 · 100%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

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.

QuestionEffectEvidenceStatus / GRADE
Intermittent LTRA vs placebo
Serious adverse events · episodic viral wheeze in children
Leukotriene receptor antagonists as maintenance and intermittent therapy for episodic viral wheeze in children (2015) · Cochrane
no estimate extractedNRNo studies
Maintenance LTRA vs placebo
Serious adverse events · episodic viral wheeze in children
Leukotriene receptor antagonists as maintenance and intermittent therapy for episodic viral wheeze in children (2015) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Hospitalisations · individuals with stable bronchiectasis
Airway clearance techniques for bronchiectasis (2015) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Adverse events (AEs) · individuals with stable bronchiectasis
Airway clearance techniques for bronchiectasis (2015) · Cochrane
no estimate extractedNRNo studies
Bromhexine vs placebo
Frequency and duration of exacerbations · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
RhDNase vs placebo
Adverse events · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
RhDNase vs placebo
Health‐related quality of life · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Erdosteine vs no treatment
Frequency and duration of exacerbations · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Erdosteine vs no treatment
Hospitalisations for infective exacerbations · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Erdosteine vs no treatment
Adverse events · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Erdosteine vs no treatment
Health‐related quality of life · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Bromhexine vs placebo
Hospitalisations · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Erdosteine vs no treatment
Deaths · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Bromhexine vs placebo
Health‐related quality of life · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Bromhexine vs placebo
Deaths · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
RhDNase vs placebo
Frequency and duration of exacerbations · patients with bronchiectasis
Mucolytics for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Inhaled mannitol vs placebo
Mortality · patients with bronchiectasis
Inhaled hyperosmolar agents for bronchiectasis (2014) · Cochrane
no estimate extractedNRNo studies
Non‐invasive ventilation during exercise training vs exercise training alone or exercise training with sham non‐invasive ventilation
Physical activity: not measured · people with chronic obstructive pulmonary disease
Non‐invasive ventilation during exercise training for people with chronic obstructive pulmonary disease (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Outcomes · patients with chronic obstructive pulmonary disease
Inhaled steroids and risk of pneumonia for chronic obstructive pulmonary disease (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Outcomes · patients with chronic obstructive pulmonary disease
Inhaled steroids and risk of pneumonia for chronic obstructive pulmonary disease (2014) · Cochrane
no estimate extractedNRNo studies
Comparison of water‐based exercise vs control
Quality of life · adults with asthma
Water‐based exercise for adults with asthma (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Health‐related quality of life · participants with asthma
Vitamins C and E for asthma and exercise‐induced bronchoconstriction (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Asthma exacerbation as defined by hospital admission or treatment with a course of oral corticosteroids · participants with asthma
Vitamins C and E for asthma and exercise‐induced bronchoconstriction (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Health‐related quality of life · participants with exercise‐induced asthma
Vitamins C and E for asthma and exercise‐induced bronchoconstriction (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Asthma exacerbation as defined by hospital admission or treatment with a course of oral corticosteroids · participants with exercise‐induced asthma
Vitamins C and E for asthma and exercise‐induced bronchoconstriction (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Adverse events · participants with exercise‐induced asthma
Vitamins C and E for asthma and exercise‐induced bronchoconstriction (2014) · Cochrane
no estimate extractedNRNo studies
Inactivated influenza vaccine vs placebo
Protection from experiencing an asthma exacerbation of any cause over the influenza season ‐ adults given inactivated influenza vaccine · children and adults with asthma
Vaccines for preventing influenza in people with asthma (2013) · Cochrane
no estimate extractedNRNo studies
Inactivated influenza vaccine vs placebo
Protection from experiencing an influenza‐related asthma exacerbation over the influenza season ‐ adults given inactivated influenza vaccine · children and adults with asthma
Vaccines for preventing influenza in people with asthma (2013) · Cochrane
no estimate extractedNRNo studies
Inspiratory muscle training vs control
Exacerbations requiring a course of oral or inhaled corticosteroids or emergency department visits · Participants with asthma
Inspiratory muscle training for asthma (2013) · Cochrane
no estimate extractedNRNo studies
SiT for maintenance/relief vs higher‐dose ICS/LABA + SABA
Outcomes · Studies recruited adults and adolescents aged 12 and older with chronic asthma
Combination formoterol and budesonide as maintenance and reliever therapy versus combination inhaler… (2013) · Cochrane
no estimate extractedNRNo studies
SiT for maintenance/relief vs higher‐dose ICS/LABA + SABA
People with exacerbations requiring hospitalisation · Studies recruited adults and adolescents aged 12 and older with chronic asthma
Combination formoterol and budesonide as maintenance and reliever therapy versus combination inhaler… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Quality of life · Participants with primary dysfunctional breathing/hyperventilation syndrome
Breathing exercises for dysfunctional breathing/hyperventilation syndrome in adults (2013) · Cochrane
no estimate extractedNRNo studies
Nurse‐led vs physician‐led care
Frequency of exacerbations · the management of asthma
Nurse versus physician‐led care for the management of asthma (2013) · Cochrane
no estimate extractedNRNo studies
Nurse‐led vs physician‐led care
Asthma severity and symptoms · the management of asthma
Nurse versus physician‐led care for the management of asthma (2013) · Cochrane
no estimate extractedNRNo studies
Nurse‐led vs physician‐led care
Healthcare costs, direct and indirect · the management of asthma
Nurse versus physician‐led care for the management of asthma (2013) · Cochrane
no estimate extractedNRNo studies
Inhaled corticosteroids (ICS) vs placebo
Primary outcome · adults with subacute and chronic cough
Inhaled corticosteroids for subacute and chronic cough in adults (2013) · Cochrane
no estimate extractedNRNo studies
Inhaled corticosteroids (ICS) vs placebo
Secondary outcomes · adults with subacute and chronic cough
Inhaled corticosteroids for subacute and chronic cough in adults (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Exacerbations requiring hospital admission · children and adolescents aged 18 years and under studies with asthma
Swimming training for asthma in children and adolescents aged 18 years and under (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Exacerbations requiring a course of oral corticosteroids · children and adolescents aged 18 years and under studies with asthma
Swimming training for asthma in children and adolescents aged 18 years and under (2013) · Cochrane
no estimate extractedNRNo studies
Long‐acting beta2‐agonists vs placebo
Outcomes · people with chronic obstructive pulmonary disease
Long‐acting beta₂‐agonists for chronic obstructive pulmonary disease (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Quality of life · children with dysfunctional breathing/hyperventilation syndrome
Breathing exercises for dysfunctional breathing/hyperventilation syndrome in children (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Nijmegen questionnaire · children with dysfunctional breathing/hyperventilation syndrome
Breathing exercises for dysfunctional breathing/hyperventilation syndrome in children (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Ventilation · children with dysfunctional breathing/hyperventilation syndrome
Breathing exercises for dysfunctional breathing/hyperventilation syndrome in children (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Exercise capacity · children with dysfunctional breathing/hyperventilation syndrome
Breathing exercises for dysfunctional breathing/hyperventilation syndrome in children (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Dysfunctional breathing‐specific tests (e.g. breath hold test or hyperventilation provocation test (HVPT)) · children with dysfunctional breathing/hyperventilation syndrome
Breathing exercises for dysfunctional breathing/hyperventilation syndrome in children (2013) · Cochrane
no estimate extractedNRNo studies
Summary of findings: Vitamin C supplementation vs placebo
Adverse events · adults and children with exercise‐induced bronchoconstriction/asthma
Vitamin C for asthma and exercise‐induced bronchoconstriction (2013) · Cochrane
no estimate extractedNRNo studies
Summary of findings: Vitamin C supplementation vs placebo
Health‐related quality of life (HRQL) · adults and children with exercise‐induced bronchoconstriction/asthma
Vitamin C for asthma and exercise‐induced bronchoconstriction (2013) · Cochrane
no estimate extractedNRNo studies
Summary of findings: Vitamin C supplementation vs placebo
Asthma exacerbations · adults and children with exercise‐induced bronchoconstriction/asthma
Vitamin C for asthma and exercise‐induced bronchoconstriction (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
SAEs ‐ formoterol versus salbutamol · patients with chronic asthma (children)
Regular treatment with formoterol for chronic asthma: serious adverse events (2012) · Cochrane
no estimate extractedNRNo studies