Evidence map›Paper›PMID 34448037›Full record

ArticleArchives of gynecology and obstetrics2022

Risk factors and clinical outcomes for placenta accreta spectrum with or without placenta previa.

Kohei Ogawa, Seung Chik Jwa, Naho Morisaki, Haruhiko Sago

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in Archives of gynecology and obstetrics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Impact of Prior Cesarean Delivery on Pregnancy Outcomes and Hemorrhage Risks in Complete Placenta Previa: A Decade-Long Retrospective Analysis.Medical science monitor : international medical journal of experimental and clinical research · 2024
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  7. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Kohei OgawaCenter for Maternal-Fetal, Neonatal and Reproductive Medicine, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan. ogawa-k@ncchd.go.jp.ORCID 0000-0003-0997-2845
Seung Chik JwaDepartment of Obstetrics and Gynecology, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan.ORCID 0000-0002-8815-5714
Naho MorisakiDepartment of Social Medicine, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan.ORCID 0000-0001-6151-4513
Haruhiko SagoCenter for Maternal-Fetal, Neonatal and Reproductive Medicine, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, 157-8535, Japan.ORCID 0000-0001-9387-1849

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo clarify risk factors and clinical outcomes for placenta accreta spectrum (PAS) stratified by placenta previa.

methodsWe conducted registry-based multicenter cross-sectional study including 472,301 singleton deliveries between 2013 and 2015. PAS was considered as a primary outcome, as well as maternal age, parity, history of cesarean section, history of miscarriage, and assisted reproductive technology (ART) were considered as potential exposures. A multivariable Poisson regression analysis was conducted to assess the risk for PAS, stratified by placenta previa. In addition, the risk for subsequent blood transfusion and hysterectomy by each exposure using multivariable Poisson regression analysis was conducted.

resultsThere were 426 and 1827 cases of PAS with and without placenta previa. Among cases with placenta previa, the number of previous cesarean sections was the most powerful predictor for PAS [adjusted risk ratio (aRR) for one previous cesarean section 5.34, 95% confidence interval (CI) 3.70-7.71; aRR for two or more previous cesarean section 16.5, 95% CI 11.5-23.6]. Among cases without placenta previa, previous cesarean section was not a significant predictor, whereas the strongest predictor was conception through ART (aRR 5.05, 95% CI 4.50-5.66). Although the risks of PAS for blood transfusion and hysterectomy were higher among cases with placenta previa, those without placenta previa also demonstrated non-negligible risks.

conclusionThe current study demonstrated that history of cesarean section was the strongest risk factor for PAS among women with placenta previa. Among those without placenta previa, ART was an important predictor, but not cesarean section.

Indexed as

Placenta AccretaPlacenta PreviaCesarean SectionCross-Sectional StudiesFemaleHumansPregnancyRetrospective StudiesRisk FactorsAssisted reproductive technologyHistory of cesarean sectionPlacenta accreta spectrumPlacenta previa

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.