Zinc vs placebo: FEV1 % predicted
It is very uncertain whether summary of findings: Zinc supplementation changes respiratory function mean FEV1 % predicted compared with placebo (very low certainty).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Summary of findings: Zinc supplementation vs placebo Respiratory function mean FEV1 % predicted · children with cystic fibrosis It is very uncertain whether summary of findings: Zinc supplementation changes respiratory function mean FEV1 % predicted compared with placebo (very low certainty). Antibiotic adjuvant therapy for pulmonary infection in cystic fibrosis (2020) · Cochrane Headline outcomes only | no estimate extracted | 2 studies · 62 participants | Very low |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Antibiotic adjuvant therapy for pulmonary infection in cystic fibrosis 2020 · Cochrane Headline outcomes only | Not reported | list not extracted yet | Not assessed |
Studies behind the findings
None of these reviews ties its included studies to this outcome in the data here. Cochrane reviews and reviews with headline outcomes only do not list their studies yet.
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.