Evidence map›Paper›PMID 28899348›Full record

SynthesisBMC pregnancy and childbirth2017

Cesarean section to prevent mother-to-child transmission of hepatitis B virus in China: A meta-analysis.

Mei Yang, Qin Qin, Qiong Fang, Lixin Jiang, Shaofa Nie

Open access · goldAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in BMC pregnancy and childbirth, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 6% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Case series of 20 pregnant women with 2019 novel coronavirus disease in Wuhan, China.The journal of obstetrics and gynaecology research · 2021
    Article
  11. Viral hepatitis and pregnancy.Nature reviews. Gastroenterology & hepatology · 2021
    Review
  12. Article
  13. Article
  14. Review
  15. Review
  16. Chronic Hepatitis B in Pregnancy.Clinical liver disease · 2018
    Review
  17. Review
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

5 authors at 2 institutions in 1 country.

Mei YangFutian District Center for Disease Control and Prevention of Shenzhen China, Futian District, Shenzhen, 518000, China.
Qin QinDepartment of Health Prevention and Care, Zhongshan Hospital, Xiamen University, Xiamen, 361004, China.
Qiong FangFutian District Center for Disease Control and Prevention of Shenzhen China, Futian District, Shenzhen, 518000, China.
Lixin JiangFutian District Center for Disease Control and Prevention of Shenzhen China, Futian District, Shenzhen, 518000, China.
Shaofa NieDepartment of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, China. sf_nie@mails.tjmu.edu.cn.
Shenzhen Center for Disease Control and Prevention · CNHuazhong University of Science and Technology · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHepatitis B virus (HBV) is predominantly transmitted through mother-to-child transmission (MTCT). To date, it remains unclear whether the method of parturition affects MTCT of HBV. In order to clarify whether cesarean section, when compared with vaginal delivery, could reduce the risk of MTCT of HBV in China, we conducted this meta-analysis.

methodsA systematic literature search was performed of the PubMed (Medline), Embase, ISI Web of Science, China Biological Medicine Database, China National Knowledge Infrastructure, and VIP Database for Chinese Technical Periodicals databases for articles written in English or Chinese through July 2015.The reference lists of relevant articles were also scrutinized for additional papers. Randomized controlled trials, cohort studies, or case-control studies investigating the effect of delivery mode on MTCT of HBV were included.

resultsThis analysis involved 28 articles containing 30 datasets. The data encompassed 9906 participants. The MTCT rate of HBV was 6.76% (670 of 9906) overall, with individual rates of 4.37% (223 of 5105) for mothers who underwent cesarean section and 9.31% (447 of 4801) for those who underwent vaginal delivery. The summary relative risk (RR) was 0.51 (95%CI: 0.44-0.60, P < 0.001), indicating a statistically significant decrease in HBV vertical transmission via cesarean section compared with vaginal delivery. The heterogeneity among studies was moderate with an I

conclusionsCesarean section could reduce the risk of MTCT of HBV in comparison to vaginal delivery in China. However, owing to several limitations of our meta-analysis, future well-designed randomized controlled trials with adequate statistical power, might be a more appropriate next step.

Indexed as

Cesarean SectionChinaDelivery, ObstetricFemaleHepatitis BHumansInfant, NewbornInfectious Disease Transmission, VerticalPregnancyCesarean sectionHepatitis B virusMeta-analysisMother-to-child transmission

Identifiers

PMID28899348
PMCPMC5596961
OpenAlexW2754370573

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.