Evidence map›Paper›PMID 34430576›Full record

ArticleAnnals of translational medicine2021

Previous mode of delivery affects subsequent pregnancy outcomes: a Chinese birth register study.

Xiaoxu Chen, Jinsong Gao, Juntao Liu, Jing Hu, Sijian Li, Yabin Tang, Mei Zhong, Jing He, Sibiu Liao, Jimmying Yang and 8 more

Open access · diamondAbstract read
In one paragraph

Article in Annals of translational medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 9% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. 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
    Article
  7. Article
  8. ROS induced lipid peroxidation and their role in ferroptosis.Frontiers in cell and developmental biology · 2023
    Review
  9. Article
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

18 authors at 11 institutions in 1 country.

Xiaoxu ChenDepartment of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, China.
Jinsong GaoDepartment of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, China.
Juntao LiuDepartment of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, China.
Jing HuDepartment of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, China.
Sijian LiDepartment of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, China.
Yabin TangDepartment of Obstetrics and Gynecology, Hunan Maternal and Child Health Care Hospital, Changsha, China.
Mei ZhongDepartment of Obstetrics and Gynecology, Nanfang Hospital Southern Medical University, Guangzhou, China.
Jing HeDepartment of Obstetrics and Gynecology, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China.
Sibiu LiaoDepartment of Obstetrics and Gynecology, Provincial People's Hospital, Zhengzhou, China.
Jimmying YangDepartment of Obstetrics and Gynecology, Harbin Nangang District Maternity Hospital, Harbin, China.
Xiaowei LiuDepartment of Obstetrics and Gynecology, Beijing Obstetrics and Gynecology Hospital Capital Medical University, Beijing, China.
Xietong WangDepartment of Obstetrics and Gynecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.
Xiaohong LiuDepartment of Obstetrics and Gynecology, Beijing Haidian Maternal and Child Health Hospital, Beijing, China.
Xinghui LiuDepartment of Obstetrics and Gynecology, Sichuan University West China Second Hospital, Chengdu, China.
Yinli CaoDepartment of Obstetrics and Gynecology, Northwest Women and Children's Hospital, Xi'an, China.
Tianyun WangDepartment of Obstetrics and Gynecology, Ruijin Maternal and Child Health Hospital, Shanghai, China.
Caixia LiuDepartment of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, China.
Jingxia SunDepartment of Obstetrics and Gynecology, The First Clinical Hospital Affiliated to Harbin Medical University, Harbin, China.
Chinese Academy of Medical Sciences & Peking Union Medical College · CNPeking Union Medical College Hospital · CNBeijing Obstetrics and Gynecology Hospital · CNCapital Medical University · CNFirst Affiliated Hospital of Harbin Medical University · CNHenan Provincial People's Hospital · CNNanfang Hospital · CNShandong University · CNSichuan University · CNSouthern Medical University · CNWomen's Hospital, School of Medicine, Zhejiang University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWith the comprehensive implementation of the second child policy in China, the proportion of multiparous women has increased dramatically in the past few years. As nearly half of them have a history of previous cesarean delivery, there is widespread concern regarding complications of their pregnancy.

methodsThe aim of this study was to evaluate the effect of the previous delivery mode on subsequent pregnancy outcomes in the real world based on data from a Chinese birth registry. Birth registry data from July 1, 2016 to June 30, 2017 among a Chinese population were collected and analyzed retrospectively. This study included 14 representative hospitals from 10 provinces of China. All delivery data were collected by an internet-based system using a birth registration platform. The study enrolled 36,355 multiparas. Information extracted for analysis included basic demographic characteristics, previous delivery mode, current delivery mode, major maternal complications, and neonatal outcomes. Pregnancy outcomes of women with previous cesarean delivery (PCS group, n=14,774) were compared with the outcomes of women with previous vaginal delivery (PVD group, n=21,581).

resultsThere were statistically significant differences in the major pregnancy outcomes between the PCS group and the PVD group. The PCS group had a higher incidence of cesarean section (CS), placenta previa, postpartum hemorrhage, uterus rupture, hysterectomy, gestational diabetes, gestational hypertension, delivery before 37 weeks of gestation, low birth weight, and Apgar Score at 5 min ≤3.

conclusionsWomen with previous cesarean delivery had poorer pregnancy outcomes than women with previous vaginal delivery. Avoiding unnecessary CS, especially in primiparas is essential to improving maternal and neonatal outcomes in later pregnancies.

Indexed as

Cesarean deliverymultiparapregnancy outcomesscarred uterus

Identifiers

PMID34430576
PMCPMC8350719
OpenAlexW3179587827

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.