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What do systematic reviews say?

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Evidence found and GRADE certainty

7 questions · 7 findings · 1 reviews

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No studies found 3 · 42.9%GRADE not reported 0 · 0%Very low 2 · 28.6%Low 0 · 0%Moderate 2 · 28.6%High 0 · 0%

Zinc vs placebo

Pulmonary exacerbations number of participants requiring IV antibiotics · children with cystic fibrosis

Summary of findings: Zinc supplementation showed no clear difference in pulmonary exacerbations number of participants requiring IV… compared with placebo (moderate certainty).

1 finding from 1 review

Zinc vs placebo

Adverse events number of participants hospitalised during the trial · children with cystic fibrosis

Summary of findings: Zinc supplementation showed no clear difference in adverse events number of participants hospitalised during the trial compared with placebo (moderate certainty).

1 finding from 1 review

Zinc vs placebo

Need for antibiotics days of antibiotic use · children with cystic fibrosis

It is very uncertain whether summary of findings: Zinc supplementation changes need for antibiotics number of days on IV or oral antibiotics compared with placebo (very low certainty).

1 finding from 1 review