Question · asked by 1 review
Vitamin A vs placebo: Incidence of acute URTIs during the study period (proportion of participants with an acute URTI)
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Summary of findings table ‐ Vitamin A supplements vs placebo Incidence of acute URTIs during the study period (proportion of participants with an acute URTI) · children up to the age of 7 at risk of upper respiratory tract infection Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years… (2024) · Cochrane Headline outcomes only | no estimate extracted | 2 studies · 15535 participants | Low |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age 2024 · 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.