Multiple micronutrients vs control (iron and/or folic acid): Preterm birth
- Population
- pregnant women
- Intervention
- Multiple micronutrients
- Comparison
- control (iron and/or folic acid)
- Outcome
- Preterm birth
Multiple micronutrients showed no clear difference in preterm births compared with control (iron and/or folic acid) (high certainty).
What each review found
Current versions only| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Multiple micronutrients vs control (iron and/or folic acid) Preterm births · Pregnant women Multiple micronutrients showed no clear difference in preterm births compared with control (iron and/or folic acid) (high certainty). Multiple‐micronutrient supplementation for women during pregnancy (2017) · Cochrane Headline outcomes onlyearlier version CD004905.PUB5, superseded | RR 0.96 [0.9, 1.03] | 15 studies · 90892 participants | High |
Multiple micronutrients vs control (iron and/or folic acid) Preterm births · Pregnant women Multiple micronutrients showed no clear difference in preterm births compared with control (iron and/or folic acid) (high certainty). Multiple‐micronutrient supplementation for women during pregnancy (2015) · Cochrane Headline outcomes onlyearlier version CD004905.PUB4, superseded | RR 0.96 [0.9, 1.03] | 15 studies · 90892 participants | High |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Multiple‐micronutrient supplementation for women during pregnancy 2019 · Cochrane Headline outcomes only | Not reported | Not extracted | Not assessed |
Related questions
The same intervention and outcome, asked in another population or against another comparator.
- Multiple micronutrients vs control (iron and/or folic acid) · women during pregnancy · 1 review
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.