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What do systematic reviews say?

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Evidence found and GRADE certainty

4,678 questions · 4,859 findings · 283 reviews

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No studies found 1,225 · 25.2%GRADE not reported 215 · 4.4%Very low 1,241 · 25.5%Low 1,210 · 24.9%Moderate 776 · 16%High 192 · 4%

Omega‐3 vs placebo

Diarrhoea · adults and children with cystic fibrosis

It is very uncertain whether summary of findings: omega‐3 fatty acid supplementation changes adverse events: diarrhoea compared with placebo (very low certainty).

1 finding from 1 review

Omega‐3 vs placebo

FEV1 % predicted · adults and children with cystic fibrosis

It is very uncertain whether summary of findings: omega‐3 fatty acid supplementation changes FEV1 % predicted compared with placebo (very low certainty).

1 finding from 1 review

Omega‐3 vs placebo

FVC · adults and children with cystic fibrosis

It is very uncertain whether summary of findings: omega‐3 fatty acid supplementation changes FVC % predicted compared with placebo (very low certainty).

1 finding from 1 review

Omega‐3 vs placebo

Z score BMI · adults and children with cystic fibrosis

It is very uncertain whether summary of findings: omega‐3 fatty acid supplementation changes growth and nutrition: BMI SD score compared with placebo (very low certainty).

1 finding from 1 review

Summary of findings: Assessment/screening interventions vs control

Functional ability · stroke survivors with visual field defects

It is very uncertain whether summary of findings: Assessment/screening interventions changes functional ability in activities of daily living (FIM) After… compared with control (very low certainty).

1 finding from 1 review

Summary of findings for selective ß2‐adrenergic agonist vs no tocolytic agent, whilst awaiting emergency delivery

Perinatal death or severe morbidity · women with fetal distress for whom the decision had been made to delivery by emergency caesarean section

The review found no eligible studies for this question.

1 finding from 1 review

Summary of findings for selective ß2‐adrenergic agonist vs no tocolytic agent, whilst awaiting emergency delivery

Fetal or neonatal mortality · women with fetal distress for whom the decision had been made to delivery by emergency caesarean section

Summary of findings for selective ß2‐adrenergic agonist showed no clear difference in fetal or neonatal mortality compared with no tocolytic agent, whilst awaiting emergency delivery (low certainty).

1 finding from 1 review

Summary of findings for selective ß2‐adrenergic agonist vs no tocolytic agent, whilst awaiting emergency delivery

Apgar score less than 7 at 5 minutes · women with fetal distress for whom the decision had been made to delivery by emergency caesarean section

Summary of findings for selective ß2‐adrenergic agonist showed no clear difference in 5‐minute Apgar score < 7 compared with no tocolytic agent, whilst awaiting emergency delivery (low certainty).

1 finding from 1 review