Viral influenza vaccine vs control: Perinatal death (stillbirth + death in first week of life)
Viral influenza vaccine showed no clear difference in perinatal death (stillbirth + death in first week of life) compared with control (moderate certainty).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Viral influenza vaccine vs control Perinatal death (stillbirth + death in first week of life) · Pregnant women aged 18 to 38 years and an estimated gestation of 20 to 36 weeks. Viral influenza vaccine showed no clear difference in perinatal death (stillbirth + death in first week of life) compared with control (moderate certainty). Impact of Haemophilus influenzae type B (Hib) and viral influenza vaccinations in pregnancy for improving… (2015) · Cochrane Headline outcomes only | RR 1.32 [0.73, 2.38] | 1 study · 2083 participants | Moderate |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Impact of Haemophilus influenzae type B (Hib) and viral influenza vaccinations in pregnancy for improving maternal, neonatal and infant… 2015 · 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.