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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
Vitamin K vs control
PIVKA II levels: change in PIVKA II (ng/mL) · people with cystic fibrosis
Vitamin K supplementation for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 18 participantsVery low
Vitamin K vs control
Uncarboxylated osteocalcin: change in carboxylation of osteocalcin (% Glu‐OC) · people with cystic fibrosis
Vitamin K supplementation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Time to cessation of bleeding · people with cystic fibrosis
Vitamin K supplementation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Bone mineral density: lumbar spine z score · people with cystic fibrosis
Vitamin K supplementation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Summary of findings ‐ 400 mg inhaled mannitol vs 50 mg inhaled mannitol
HRQoL ‐ all domains (change from baseline) Scale: age‐appropriate versions of the CFQ‐R questionnaire · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted2 studies · 324 participantsLow
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Lung function: FVC mL or % predicted (change from baseline) · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted1261 participantsLow
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Lung function: FEF25-75 mL/s or % predicted (change from baseline) · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted1261 participantsLow
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Adverse events relating to treatment Scale: mild, moderate, severe and total · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted123 participantsLow
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
HRQoL ‐ change from baseline in CFCS total score and CFQ‐R respiratory domain · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 22 participantsVery low
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Lung function: FEV1 mL% predicted (change from baseline) · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Lung function: FEV1 % predicted (change from baseline) · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 22 participantsLow
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Lung function: FVC % predicted (change from baseline) · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 22 participantsLow
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Lung function: FEF25-75 % predicted (change from baseline) · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 22 participantsLow
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Adverse events relating to treatment · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 22 participantsLow
Summary of findings ‐ Inhaled mannitol vs dornase alfa
HRQoL ‐ all domains (change from baseline) Scale: age‐appropriate versions of the CFQ‐R questionnaire · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted231 participantsVery low
Summary of findings ‐ 400 mg inhaled mannitol vs 50 mg inhaled mannitol
Lung function: FEV1 mL (change from baseline) · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted2 studies · 600 participantsModerate
Summary of findings ‐ Inhaled mannitol vs dornase alfa
Lung function: FEV1 mL (percentage change from baseline) · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
MD 2.8231 participantsVery low
Summary of findings ‐ Inhaled mannitol vs dornase alfa
Lung function: FEV1 % predicted · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Summary of findings ‐ Inhaled mannitol vs dornase alfa
Lung function: FVC mL (percentage change from baseline) · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
MD 0.14231 participantsVery low
Summary of findings ‐ Inhaled mannitol vs dornase alfa
Lung function: FEF25-75 mL/s (percentage change from baseline) · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted231 participantsVery low
Summary of findings ‐ Inhaled mannitol vs dornase alfa
Adverse events relating to treatment Scale: mild, moderate, severe and total · children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted231 participantsVery low
Summary of findings ‐ Inhaled mannitol plus dornase alfa vs dornase alfa
HRQoL ‐ all domains (change from baseline) Scale: age‐appropriate versions of the CFQ‐R questionnaire · children and young people with cystic fibrosis
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted231 participantsVery low
Summary of findings ‐ Inhaled mannitol plus dornase alfa vs dornase alfa
Lung function: FEV1mL (percentage change from baseline) · children and young people with cystic fibrosis
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted231 participantsVery low
Summary of findings ‐ Inhaled mannitol plus dornase alfa vs dornase alfa
Lung function: FEV1 % predicted · children and young people with cystic fibrosis
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Summary of findings ‐ Inhaled mannitol plus dornase alfa vs dornase alfa
Lung function: FVC mL (percentage change from baseline) · children and young people with cystic fibrosis
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted231 participantsVery low
Summary of findings ‐ Inhaled mannitol plus dornase alfa vs dornase alfa
Lung function: FEF25-75 mL/s (percentage change from baseline) · children and young people with cystic fibrosis
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted231 participantsVery low
Summary of findings ‐ 400 mg inhaled mannitol vs 50 mg inhaled mannitol
Lung function: FEV1 % predicted (change from baseline) · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted2 studies · 600 participantsModerate
Summary of findings ‐ Inhaled mannitol plus dornase alfa vs dornase alfa
Adverse events relating to treatment Scale: mild, moderate, severe and total · children and young people with cystic fibrosis
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted231 participantsVery low
Summary of findings ‐ 400 mg inhaled mannitol vs 50 mg inhaled mannitol
Lung function: FVC mL (change from baseline) · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted2 studies · 600 participantsModerate
Summary of findings ‐ 400 mg inhaled mannitol vs 50 mg inhaled mannitol
Lung function: FEF25-75 mL/s (change from baseline) · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted2 studies · 600 participantsModerate
Summary of findings ‐ 400 mg inhaled mannitol vs 50 mg inhaled mannitol
Adverse events relating to treatment Scale: mild, moderate, severe and total · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted2 studies · 600 participantsModerate
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
HRQoL ‐ all domains (change from baseline) Scale: age‐appropriate versions of the CFQ‐R questionnaire · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted391 participantsVery low
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Lung function: FEV1 mL (absolute change from baseline) · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 391 participantsLow
Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)
Lung function: FEV1 % predicted (change from baseline) · adults, children and young people with CF
Inhaled mannitol for cystic fibrosis (2020) · Cochrane
no estimate extracted1261 participantsLow
Inhalation before vs during airway clearance techniques
FEV1 % predicted · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extracted2 studies · 63 participantsLow
Inhalation before vs after airway clearance techniques
QoL · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Inhalation before vs after airway clearance techniques
Symptom scores · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 50 participantsLow
Inhalation before vs after airway clearance techniques
Measures of sputum clearance · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Inhalation before vs after airway clearance techniques
LCI · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Inhalation before vs after airway clearance techniques
Adverse events · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Inhalation during vs after airway clearance techniques
FEV1 % predicted · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 50 participantsLow
Inhalation during vs after airway clearance techniques
FVC % predicted · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 50 participantsLow
Inhalation during vs after airway clearance techniques
QoL · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Inhalation during vs after airway clearance techniques
Symptom scores · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 50 participantsLow
Inhalation during vs after airway clearance techniques
Measures of sputum clearance · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Inhalation before vs during airway clearance techniques
FVC % predicted · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extracted1 study · 50 participantsLow
Inhalation during vs after airway clearance techniques
LCI · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Inhalation during vs after airway clearance techniques
Adverse events · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Inhalation before vs during airway clearance techniques
QoL · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extractedNRNo studies
Inhalation before vs during airway clearance techniques
Symptom scores · adults and children with cystic fibrosis
Timing of hypertonic saline inhalation for cystic fibrosis (2020) · Cochrane
no estimate extracted3 studies · 76 participantsLow