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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)

2,280 questions in 114 reviews · Cystic Fibrosis and Genetic Disorders

current versions
No studies 856 · 37.5%Ungraded 58 · 2.5%Very low 550 · 24.1%Low 502 · 22%Moderate 271 · 11.9%High 43 · 1.9%

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
Summary of findings: oral antioxidant combination vs control
Nutritional status: change from baseline in BMI · children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral antioxidant combination vs control
Pulmonary exacerbations: mean time to next exacerbation · children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral antioxidant combination vs control
Adverse events · children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral antioxidant mixed supplement vs control
Lung function: FEV1 % predicted mean change from baseline · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral antioxidant mixed supplement vs control
Lung function: FEV1 % predicted mean change from baseline · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral antioxidant mixed supplement vs control
Quality of life: Quality of Well Being score change from baseline · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral antioxidant mixed supplement vs control
Nutritional status: change from baseline in BMI · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral antioxidant mixed supplement vs control
Pulmonary exacerbations: mean time to next exacerbation · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 69 participantsLow
Summary of findings: oral antioxidants (NAC/GSH) vs placebo
Quality of life: change in mean CFQ‐R score from baseline · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 61 participantsModerate
Summary of findings: oral antioxidant mixed supplement vs control
Adverse events · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 69 participantsLow
Summary of findings: inhaled antioxidants vs placebo
Lung function: FEV1 % predicted mean change from baseline · children and adults with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extracted3 studies · 258 participantsModerate
Summary of findings: inhaled antioxidants vs placebo
Lung function: FEV1 % predicted mean change from baseline · children and adults with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extracted3 studies · 258 participantsModerate
Summary of findings: inhaled antioxidants vs placebo
Quality of life: change in CFQoL score from baseline · children and adults with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 153 participantsModerate
Summary of findings: inhaled antioxidants vs placebo
Nutritional status: change from baseline in BMI · children and adults with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: inhaled antioxidants vs placebo
Pulmonary exacerbations: mean time to next exacerbation · children and adults with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: inhaled antioxidants vs placebo
Adverse events · children and adults with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extracted3 studies · 223 participantsLow
Summary of findings: oral antioxidants (NAC/GSH) vs placebo
Nutritional status: change from baseline in BMI · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 62 participantsModerate
Summary of findings: oral antioxidants (NAC/GSH) vs placebo
Pulmonary exacerbations: mean time to next exacerbation · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral antioxidants (NAC/GSH) vs placebo
Adverse events · adults and children with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
OR 2.92 [0.11, 74.05]1 study · 70 participantsModerate
Summary of findings: oral vitamin E supplementation vs placebo or no treatment
Lung function: FEV1 % predicted mean change from baseline · children and adults with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral vitamin E supplementation vs placebo or no treatment
Lung function: FEV1 % predicted mean change from baseline · children and adults with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings: oral vitamin E supplementation vs placebo or no treatment
Quality of life · children and adults with cystic fibrosis
Antioxidant supplementation for lung disease in cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Change in urinary GAG excretion from baseline · adults and children with mucopolysaccharidosis I
Enzyme replacement therapy with laronidase (Aldurazyme®) for treating mucopolysaccharidosis type I (2019) · Cochrane
no estimate extracted1 study · 43 participantsLow
Intervention NR
Mean percentage change from baseline in FVC (% predicted) · adults and children with mucopolysaccharidosis I
Enzyme replacement therapy with laronidase (Aldurazyme®) for treating mucopolysaccharidosis type I (2019) · Cochrane
no estimate extracted1 study · 45 participantsLow
Intervention NR
Mean change from baseline in 6MWT (metres) · adults and children with mucopolysaccharidosis I
Enzyme replacement therapy with laronidase (Aldurazyme®) for treating mucopolysaccharidosis type I (2019) · Cochrane
no estimate extracted1 study · 45 participantsLow
Intervention NR
Infusion‐related reactions (number of participants with one or more reaction) · adults and children with mucopolysaccharidosis I
Enzyme replacement therapy with laronidase (Aldurazyme®) for treating mucopolysaccharidosis type I (2019) · Cochrane
OR 0.51 [0.15, 1.71]1 study · 45 participantsLow
Intervention NR
Antibody production: number of participants developing IgG antibodies · adults and children with mucopolysaccharidosis I
Enzyme replacement therapy with laronidase (Aldurazyme®) for treating mucopolysaccharidosis type I (2019) · Cochrane
OR 385.4 [17.47, 8500.51]1 study · 45 participantsVery low
Intervention NR
Quality of life · adults and children with mucopolysaccharidosis I
Enzyme replacement therapy with laronidase (Aldurazyme®) for treating mucopolysaccharidosis type I (2019) · Cochrane
no estimate extracted1 study · 45 participantsLow
Intervention NR
Mortality: number of deaths · adults and children with mucopolysaccharidosis I
Enzyme replacement therapy with laronidase (Aldurazyme®) for treating mucopolysaccharidosis type I (2019) · Cochrane
no estimate extracted1 study · 45 participantsLow
Summary of findings ‐ ivacaftor vs placebo
Survival · adults and children with cystic fibrosis and with the F508del CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 140 participantsUngraded
Summary of findings ‐ ivacaftor vs placebo
QoL (CFQ‐R) Respiratory domain · adults and children with cystic fibrosis and with at least one G551D CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted3 studies · 222 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
FEV1 % predicted Relative change from baseline · adults and children with cystic fibrosis and with at least one G551D CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted3 studies · 232 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
FEV1 L and % predicted Absolute change from baseline · adults and children with cystic fibrosis and with at least one G551D CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted3 studies · 232 participantsLow
Summary of findings ‐ ivacaftor vs placebo
Adverse events · adults and children with cystic fibrosis and with at least one G551D CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted3 studies · 232 participantsLow
Summary of findings ‐ ivacaftor vs placebo
Time to first pulmonary exacerbation · adults and children with cystic fibrosis and with at least one G551D CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
HR 0.46 [0.29, 0.73]1 study · 161 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
Survival · adults and children with cystic fibrosis and with at least one R117H CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 69 participantsUngraded
Summary of findings ‐ ivacaftor vs placebo
QoL Total score · adults and children with cystic fibrosis and with at least one R117H CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings ‐ ivacaftor vs placebo
QoL (CFQ‐R) Respiratory domain · adults and children with cystic fibrosis and with at least one R117H CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 69 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
FEV1 % predicted Relative change from baseline · adults and children with cystic fibrosis and with at least one R117H CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 69 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
FEV1 L and % predicted Absolute change from baseline · adults and children with cystic fibrosis and with at least one R117H CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 69 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
QoL Total score · adults and children with cystic fibrosis and with the F508del CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings ‐ ivacaftor vs placebo
Adverse events · adults and children with cystic fibrosis and with at least one R117H CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 69 participantsLow
Summary of findings ‐ ivacaftor vs placebo
Time to first pulmonary exacerbation · adults and children with cystic fibrosis and with at least one R117H CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
HR 0.93 [0.42, 2.08]1 study · 69 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
QoL (CFQ‐R) Respiratory domain · adults and children with cystic fibrosis and with the F508del CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 140 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
FEV1 % predicted Relative change from baseline · adults and children with cystic fibrosis and with the F508del CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 140 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
FEV1 % predicted Absolute change from baseline · adults and children with cystic fibrosis and with the F508del CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 140 participantsModerate
Summary of findings ‐ ivacaftor vs placebo
Adverse events · adults and children with cystic fibrosis and with the F508del CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted1 study · 140 participantsLow
Summary of findings ‐ ivacaftor vs placebo
Time to first pulmonary exacerbation · adults and children with cystic fibrosis and with the F508del CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies
Summary of findings ‐ ivacaftor vs placebo
Survival · adults and children with cystic fibrosis and with at least one G551D CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extracted3 studies · 238 participantsUngraded
Summary of findings ‐ ivacaftor vs placebo
QoL Total score · adults and children with cystic fibrosis and with at least one G551D CFTR mutation
Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis (2019) · Cochrane
no estimate extractedNRNo studies