Evidence map›Paper›PMID 30104795›Full record

ArticleBulletin of the World Health Organization2018

Prior caesarean section and likelihood of vaginal birth, 2012-2016, China.

Yi Mu, Xiaohong Li, Jun Zhu, Zheng Liu, Mingrong Li, Kui Deng, Changfei Deng, Qi Li, Leni Kang, Yanping Wang and 1 more

Open access · diamondAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Bulletin of the World Health Organization, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.2field-weighted citation impact, top 5% of its field
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

20 citing papers in PubMed, 40 citations in OpenAlex.

  1. Article
  2. Review
  3. [Classification of caesarean sections by 10 Robson groups in a second level hospital].Revista medica del Instituto Mexicano del Seguro Social · 2023
    Observational
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  6. Changes in lower uterine segment thickness during different gestational weeks in pregnant women qualified for trial of labor after cesarean section.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2022
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  11. Risk Factors Associated with Uterine Rupture and Dehiscence: A Cross-Sectional Canadian Study.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2021
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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

11 authors at 2 institutions in 1 country.

Yi MuNational Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Xiaohong LiNational Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Jun ZhuKey Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China.
Zheng LiuNational Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Mingrong LiNational Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Kui DengNational Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Changfei DengNational Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Qi LiNational Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Leni KangNational Office for Maternal and Child Health Surveillance of China, Department of Paediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Yanping WangNational Office for Maternal and Child Health Surveillance of China, Department of Paediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Juan LiangNational Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Sichuan University · CNWest China Second University Hospital of Sichuan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo examine the trends and safety of vaginal birth after caesarean section around the period of the one-child policy relaxation in China.

methodsWe used data from China's National Maternal Near Miss Surveillance System between 2012 and 2016. To examine trends in vaginal birth after caesarean section, we used Poisson regression with a robust variance estimator. We also assessed the association between vaginal birth after caesarean section and maternal and perinatal outcomes.

findingsWe analysed 871 636 deliveries by women with a previous caesarean section. Both in 2012 and 2016, the rate of vaginal birth after caesarean section was 9.8%. After adjusting for institutional, sociodemographic and obstetric characteristics, the rate increased by 14% between 2012 and 2016 (adjusted relative risk, aRR: 1.14; 95% confidence interval, CI: 1.07-1.21). Compared to women with a repeat caesarean section, women with a vaginal birth after caesarean section experienced lower incidence of uterine rupture (aRR: 0.26, 95% CI: 0.16-0.42), blood transfusion (aRR: 0.68, 95% CI: 0.53-0.87) and admission to the intensive care unit (aRR: 0.36, 95% CI: 0.25-0.52), but higher incidence of intrapartum stillbirths, (aRR: 7.20, 95% CI: 6.09-8.51), newborns with a 5-minute Apgar score less than 7 (aRR: 1.75, 95% CI: 1.54-1.99) and neonatal death before discharge (aRR: 1.90, 95% CI: 1.61-2.24).

conclusionPromotion of vaginal birth after caesarean section could increase the rate even further in China. To ensure the safety of mothers and their newborns, national policies and guidelines on vaginal birth after caesarean section are needed.

Indexed as

Cesarean SectionBirth WeightChildChinaFemaleHumansInfant, NewbornParturitionPregnancyUterine RuptureVaginal Birth after Cesarean

Identifiers

PMID30104795
PMCPMC6083396
OpenAlexW2884069537

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.