Question · asked by 1 review
Vitamin A vs placebo or no treatment: Perinatal mortality
- Population
- pregnant women
- Intervention
- Vitamin A
- Comparison
- placebo or no treatment
- Outcome
- Perinatal mortality
Vitamin A alone showed no clear difference in perinatal mortality compared with placebo or no treatment (high certainty).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Vitamin A alone vs placebo or no treatment Perinatal mortality · Pregnant women Vitamin A alone showed no clear difference in perinatal mortality compared with placebo or no treatment (high certainty). Vitamin A supplementation during pregnancy for maternal and newborn outcomes (2015) · Cochrane Headline outcomes only | RR 1.01 [0.95, 1.07] | 1 study · 76176 participants | High |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Vitamin A supplementation during pregnancy for maternal and newborn outcomes 2015 · Cochrane Headline outcomes only | Not reported | Not extracted | Not assessed |
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.