Cervical pessary vs no treatment: Preterm birth less than 34 weeks' gestation
Cervical pessary showed no clear difference in delivery before 34 weeks' gestation compared with no treatment (low certainty).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Cervical pessary vs no treatment Delivery before 34 weeks' gestation · women with singleton pregnancies at risk of cervical insufficiency Cervical pessary showed no clear difference in delivery before 34 weeks' gestation compared with no treatment (low certainty). Cervical pessary for preventing preterm birth in singleton pregnancies (2022) · Cochrane Headline outcomes only | RR 0.72 [0.33, 1.55] | 5 studies · 1830 participants | Low |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Cervical pessary for preventing preterm birth in singleton pregnancies 2022 · 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.