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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)

2,325 questions in 216 reviews · Airways

current versions
No studies 249 · 10.7%Ungraded 107 · 4.6%Very low 276 · 11.9%Low 751 · 32.3%Moderate 718 · 30.9%High 224 · 9.6%

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
Mepolizumab intravenous (IV) vs placebo
Clinically significant adverse events leading to discontinuation · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Risk ratio 0.72 [0.18, 2.92]3 studies · 751 participantsHigh
Reslizumab intravenous (IV) vs placebo
Rate of clinically significant exacerbations requiring systemic corticosteroids · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Rate ratio 0.43 [0.33, 0.55]2 studies · 953 participantsHigh
Reslizumab intravenous (IV) vs placebo
Rate of exacerbations requiring emergency department treatment or admission · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Rate ratio 0.67 [0.39, 1.17]2 studies · 953 participantsHigh
Reslizumab intravenous (IV) vs placebo
Health‐related quality of life (AQLQ)Scale from: 1‐7 (higher is better) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted3 studies · 1164 participantsHigh
Reslizumab intravenous (IV) vs placebo
Health‐related quality of life (ACQ)Scale from: 0 to 6 (lower is better) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted4 studies · 1652 participantsHigh
Reslizumab intravenous (IV) vs placebo
Pre‐bronchodilator FEV1 (L) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted4 studies · 1652 participantsHigh
Mepolizumab subcutaneous (SC) vs placebo
Rate of exacerbations requiring emergency department treatment or admission · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Rate ratio 0.36 [0.2, 0.66]2 studies · 936 participantsHigh
Reslizumab intravenous (IV) vs placebo
Serious adverse events · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Risk ratio 0.79 [0.56, 1.12]4 studies · 1656 participantsHigh
Reslizumab intravenous (IV) vs placebo
Clinically significant adverse events leading to discontinuation · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Risk ratio 0.66 [0.43, 1.02]4 studies · 1659 participantsHigh
Reslizumab subcutaneous (SC) vs placebo
Rate of clinically significant exacerbations requiring systemic corticosteroids · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Rate ratio 0.79 [0.56, 1.11]1 study · 464 participantsHigh
Reslizumab subcutaneous (SC) vs placebo
Rate of exacerbations requiring emergency department treatment or admission · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Rate ratio 0.94 [0.43, 2.05]1 study · 464 participantsHigh
Reslizumab subcutaneous (SC) vs placebo
Health‐related quality of life (AQLQ)Scale from: 1‐7 (higher is better) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted1 study · 464 participantsHigh
Reslizumab subcutaneous (SC) vs placebo
Health‐related quality of life (ACQ)Scale from: 0 to 6 (lower is better) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted1 study · 464 participantsHigh
Reslizumab subcutaneous (SC) vs placebo
Health‐related quality of life (SGRQ)Scale from: 0 to 100 (lower is better) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted1 study · 464 participantsHigh
Reslizumab subcutaneous (SC) vs placebo
Pre‐bronchodilator FEV1 (L) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted1 study · 46 participantsHigh
Reslizumab subcutaneous (SC) vs placebo
Serious adverse events · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Risk ratio 0.97 [0.53, 1.79]1 study · 464 participantsHigh
Reslizumab subcutaneous (SC) vs placebo
Clinically significant adverse events leading to discontinuation · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Risk ratio 4.87 [0.57, 41.4]1 study · 464 participantsModerate
Mepolizumab subcutaneous (SC) vs placebo
Health‐related quality of life (ACQ)Scale from: 0‐6 (lower is better) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted3 studies · 1231 participantsHigh
Benralizumab subcutaneous (SC) vs placebo
Rate of clinically significant exacerbations requiring systemic corticosteroids · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Rate ratio 0.59 [0.52, 0.66]4 studies · 3112 participantsHigh
Benralizumab subcutaneous (SC) vs placebo
Rate of exacerbations requiring emergency department treatment or admission · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Rate ratio 0.68 [0.47, 0.98]2 studies · 1537 participantsModerate
Benralizumab subcutaneous (SC) vs placebo
Health‐related quality of life (AQLQ)Scale from: 1‐7 (higher is better) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted3 studies · 1541 participantsHigh
Benralizumab subcutaneous (SC) vs placebo
Health‐related quality of life (ACQ)Scale from: 0‐6 (lower is better) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted4 studies · 2791 participantsHigh
Benralizumab subcutaneous (SC) vs placebo
Pre‐bronchodilator FEV1 (L) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted4 studies · 2786 participantsHigh
Benralizumab subcutaneous (SC) vs placebo
Serious adverse events · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Risk ratio 0.76 [0.62, 0.93]5 studies · 3304 participantsHigh
Benralizumab subcutaneous (SC) vs placebo
Clinically significant adverse events leading to discontinuation · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Risk ratio 2.04 [1.03, 4.03]4 studies · 3253 participantsHigh
Mepolizumab subcutaneous (SC) vs placebo
Health‐related quality of life (SGRQ)Scale from: 0‐100 (lower is better) · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted3 studies · 1231 participantsHigh
Mepolizumab subcutaneous (SC) vs placebo
Pre‐bronchodilator FEV1 · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
no estimate extracted3 studies · 1231 participantsHigh
Mepolizumab subcutaneous (SC) vs placebo
Serious adverse events · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Risk ratio 0.68 [0.46, 1.01]3 studies · 1231 participantsHigh
Mepolizumab subcutaneous (SC) vs placebo
Clinically significant adverse events leading to discontinuation · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Risk ratio 0.6 [0.19, 1.85]3 studies · 1231 participantsHigh
Mepolizumab intravenous (IV) vs placebo
Rate of clinically significant exacerbations requiring systemic corticosteroids · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Rate ratio 0.53 [0.44, 0.64]3 studies · 751 participantsHigh
Mepolizumab intravenous (IV) vs placebo
Rate of exacerbations requiring emergency department treatment or admission · people with asthma
Anti‐IL‐5 therapies for asthma (2022) · Cochrane
Rate ratio 0.52 [0.31, 0.87]2 studies · 690 participantsHigh
Intervention NR
Proportion of people with COPD diagnoses confirmed with spirometry · health professionals managing COPD
Educational interventions for health professionals managing chronic obstructive pulmonary disease in primary… (2022) · Cochrane
no estimate extracted4 participantsVery low
Intervention NR
Proportion of patients with COPD referred to, participating in or having completed pulmonary rehabilitation · health professionals managing COPD
Educational interventions for health professionals managing chronic obstructive pulmonary disease in primary… (2022) · Cochrane
no estimate extracted4 studies · 625 participantsLow
Intervention NR
Proportion of patients with COPD prescribed respiratory medication consistent with recommended guidelines · health professionals managing COPD
Educational interventions for health professionals managing chronic obstructive pulmonary disease in primary… (2022) · Cochrane
no estimate extracted12 studies · 52899 participantsLow
Intervention NR
Proportion of patients with COPD vaccinated against influenza/pneumococcal infections · health professionals managing COPD
Educational interventions for health professionals managing chronic obstructive pulmonary disease in primary… (2022) · Cochrane
no estimate extracted4 studies · 6846 participantsModerate
Intervention NR
HRQoL · health professionals managing COPD
Educational interventions for health professionals managing chronic obstructive pulmonary disease in primary… (2022) · Cochrane
no estimate extracted12 studies · 6526 participantsLow
Intervention NR
Frequency of COPD exacerbations · health professionals managing COPD
Educational interventions for health professionals managing chronic obstructive pulmonary disease in primary… (2022) · Cochrane
no estimate extracted10 participantsLow
Intervention NR
Patient satisfaction with health care · health professionals managing COPD
Educational interventions for health professionals managing chronic obstructive pulmonary disease in primary… (2022) · Cochrane
no estimate extracted1 study · 1222 participantsModerate
Continuous positive airway pressure (CPAP) plus best supportive care vs best supportive care
Central AHI ‐ after 3 months Number of participants: 205(1 RCT)
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRLow
Adaptive servo ventilation (ASV) vs continuous positive airway pressure (CPAP)
Cardiovascular mortality
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRNo studies
Adaptive servo ventilation (ASV) vs continuous positive airway pressure (CPAP)
Serious adverse events
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRNo studies
Adaptive servo ventilation (ASV) vs continuous positive airway pressure (CPAP)
Quality of sleep
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRNo studies
Adaptive servo ventilation (ASV) vs continuous positive airway pressure (CPAP)
Quality of life
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRVery low
Adaptive servo ventilation (ASV) vs continuous positive airway pressure (CPAP)
AHI ‐ after 6 months Number of participants: 17(1 RCT)
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRLow
Adaptive servo ventilation (ASV) vs continuous positive airway pressure (CPAP)
All‐cause mortality
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRNo studies
Adaptive servo ventilation (ASV) vs continuous positive airway pressure (CPAP)
Time to life‐saving cardiovascular intervention
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRNo studies
Adaptive servo ventilation (ASV) vs bilevel ventilation
Central AHI ‐ after 6 weeks Number of participants: 30(1 RCT)
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRLow
Adaptive servo ventilation (ASV) vs bilevel ventilation
Cardiovascular mortality
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRNo studies
Adaptive servo ventilation (ASV) vs bilevel ventilation
Serious adverse events
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
no estimate extractedNRNo studies
Continuous positive airway pressure (CPAP) plus best supportive care vs best supportive care
Cardiovascular mortality ‐ after 24 months Number of participants: 258(1 RCT)
Non‐invasive positive pressure ventilation for central sleep apnoea in adults (2022) · Cochrane
RR 1.17 [0.68, 2.02]NRLow