SynthesisBMJ open2019
Epidemiology of placenta previa accreta: a systematic review and meta-analysis.
Synthesis in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05070689 (Placenta Accreta Spectrum Disorders), which is not on this map. Cited by 76 papers, 7 of them syntheses that pooled 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.
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.
Placenta Accreta Spectrum Disorders: A. Chohan Continuous Squeezing Suture (ACCSS) for Controlling Haemorrahge From Lower Uterine Segment at Caesarean Section
Who cites it
76 citing papers in PubMed, 7 syntheses or guidelines pooled it, 191 citations in OpenAlex.
- The epidemiology, clinical burden, and prevention of intrauterine adhesions (IUAs) related to surgically induced endometrial trauma: a systematic literature review and selective meta-analyses.Human reproduction update · 2025Pooled it
- Risk of Placenta Accreta Spectrum Disorder After Prior Non-Cesarean Delivery Uterine Surgery: A Systematic Review and Meta-analysis.Obstetrics and gynecology · 2025Pooled it
- Differentiating placenta accreta spectrum from scar dehiscence with underlying, non-adherent placenta: A systematic review of scoring systems and primary data analysis.Acta obstetricia et gynecologica Scandinavica · 2025Pooled it
- Prenatal ultrasound scoring in diagnosis and postpartum outcomes prediction for Placenta Accreta Spectrum (PAS): a systematic review.BMC pregnancy and childbirth · 2024Pooled it
- Prophylactic Intraoperative Uterine Artery Embolization During Cesarean Section or Cesarean Hysterectomy in Patients with Abnormal Placentation: A Systematic Review and Meta-Analysis.Cardiovascular and interventional radiology · 2022Pooled it
- A systematic review and meta-analysis of obstetric and maternal outcomes after prior uterine artery embolization.Scientific reports · 2021Pooled it
- The effect prophylactic internal iliac artery balloon occlusion in patients with placenta previa or placental accreta spectrum: a systematic review and meta-analysis.Reproductive biology and endocrinology : RB&E · 2021Pooled it
- Prophylactic tranexamic acid for the prevention of postpartum haemorrhage in women with placenta praevia: multicentre, double blind, randomised, placebo controlled, phase 3 trial.BMJ (Clinical research ed.) · 2026Trial
- Placenta Praevia and Placenta Accreta Spectrum: Diagnosis and Management: Green-Top Guideline No. 27a.BJOG : an international journal of obstetrics and gynaecology · 2026Article
- Placenta Accreta Spectrum: A Narrative Review of Clinical Management, Contemporary Innovations, And Global Challenges.International journal of medical science and dental health · 2026Article
- Hematologic markers and machine learning in predicting placenta accreta: A case-control study.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026Article
- Clinical Characteristics, Maternal and Neonatal Outcomes in Women with Placenta Previa Compared with Breech Cesarean Controls: A Retrospective Case-Control Study from a Single Tertiary Center in Lithuania.Medicina (Kaunas, Lithuania) · 2026Article
- Diagnosis and Treatment of Ectopic Pregnancy in a Cesarean Section Scar-Case Report.Journal of clinical medicine · 2026Article
- Cesarean Scar Implantation in the Evolution of Placenta Accreta Spectrum: Implications for Recognition and Clinical Management.O&G open · 2026Review
- Clinical insights into placenta accreta spectrum: a comprehensive review.Obstetrics & gynecology science · 2026Review
- A Novel Uterus-Sparing Technique for Placenta Accreta Spectrum (PAS), at a Tertiary Center.Obstetrics and gynecology international · 2026Article
- Adjuvant Autologous Platelet-Rich Plasma Gel for Decreasing Blood Loss in Posterior Placenta Previa: A Case Series and Literature Review.Case reports in obstetrics and gynecology · 2026Article
- Deep Learning-Assisted Diagnosis of Placenta Accreta Spectrum Using the DenseNet-121 Model: A Multicenter, Retrospective Study.Journal of imaging informatics in medicine · 2025Article
- Urological outcomes and management of abnormal placental presentations: a retrospective study at a Lebanese center.Future science OA · 2025Article
- Transvaginal as an adjunct to transabdominal ultrasound improved placenta accreta spectrum disorder diagnostic accuracy in a low-experienced operator.BMC pregnancy and childbirth · 2025Article
16 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 4 institutions in 5 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo estimate the prevalence and incidence of placenta previa complicated by placenta accreta spectrum (PAS) and to examine the different criteria being used for the diagnosis.
designSystematic review and meta-analysis. DATA SOURCES: PubMed, Google Scholar, ClinicalTrials.gov and MEDLINE were searched between August 1982 and September 2018. ELIGIBILITY CRITERIA: Studies reporting on placenta previa complicated by PAS diagnosed in a defined obstetric population. DATA EXTRACTION AND SYNTHESIS: Two independent reviewers performed the data extraction using a predefined protocol and assessed the risk of bias using the Newcastle-Ottawa scale for observational studies, with difference agreed by consensus. The primary outcomes were overall prevalence of placenta previa, incidence of PAS according to the type of placenta previa and the reported clinical outcomes, including the number of peripartum hysterectomies and direct maternal mortality. The secondary outcomes included the criteria used for the prenatal ultrasound diagnosis of placenta previa and the criteria used to diagnose and grade PAS at birth.
resultsA total of 258 articles were reviewed and 13 retrospective and 7 prospective studies were included in the analysis, which reported on 587 women with placenta previa and PAS. The meta-analysis indicated a significant (p<0.001) heterogeneity between study estimates for the prevalence of placenta previa, the prevalence of placenta previa with PAS and the incidence of PAS in the placenta previa cohort. The median prevalence of placenta previa was 0.56% (IQR 0.39-1.24) whereas the median prevalence of placenta previa with PAS was 0.07% (IQR 0.05-0.16). The incidence of PAS in women with a placenta previa was 11.10% (IQR 7.65-17.35).
conclusionsThe high heterogeneity in qualitative and diagnostic data between studies emphasises the need to implement standardised protocols for the diagnoses of both placenta previa and PAS, including the type of placenta previa and grade of villous invasiveness. PROSPERO REGISTRATION NUMBER: CRD42017068589.
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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.