Evidence map›Paper›PMID 33691634›Full record

ArticleBMC infectious diseases2021

Chronic maternal hepatitis B virus infection and pregnancy outcome- a single center study in Kunming, China.

Qian Sun, Terence T Lao, Mingyu Du, Min Xie, Yonghu Sun, Bing Bai, Junnan Ma, Tianying Zhu, Shengnan Yu, Runmei Ma

Open access · goldAbstract read
In one paragraph

Article in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 4 pooled it
3.6field-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

15 citing papers in PubMed, 4 syntheses or guidelines pooled it, 30 citations in OpenAlex.

  1. [Correlation between hepatitis B virus infection and adverse pregnancy outcomes-a systematic review and meta-analysis].Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology · 2024
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. 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

10 authors at 3 institutions in 1 country.

Qian Sun *Department of Obstetrics and Gynecology, the First Affiliated Hospital of Kunming Medical University, PO box 650032, No.295, Xi Chang Road, Kunming, Yunnan, China.
Terence T Lao *Department of Obstetrics and Gynecology, the Chinese University of Hong Kong, Hong Kong, China.
Mingyu DuDepartment of Obstetrics and Gynecology, the First Affiliated Hospital of Kunming Medical University, PO box 650032, No.295, Xi Chang Road, Kunming, Yunnan, China.
Min XieDepartment of Obstetrics and Gynecology, the First Affiliated Hospital of Kunming Medical University, PO box 650032, No.295, Xi Chang Road, Kunming, Yunnan, China.
Yonghu SunDepartment of Obstetrics and Gynecology, the First Affiliated Hospital of Kunming Medical University, PO box 650032, No.295, Xi Chang Road, Kunming, Yunnan, China.
Bing BaiDepartment of Obstetrics and Gynecology, the First Affiliated Hospital of Kunming Medical University, PO box 650032, No.295, Xi Chang Road, Kunming, Yunnan, China.
Junnan MaDepartment of Obstetrics and Gynecology, the First Affiliated Hospital of Kunming Medical University, PO box 650032, No.295, Xi Chang Road, Kunming, Yunnan, China.
Tianying ZhuDepartment of Obstetrics and Gynecology, the First Affiliated Hospital of Kunming Medical University, PO box 650032, No.295, Xi Chang Road, Kunming, Yunnan, China.
Shengnan YuDepartment of Obstetrics and Gynecology, the First Affiliated Hospital of Kunming Medical University, PO box 650032, No.295, Xi Chang Road, Kunming, Yunnan, China.
Runmei MaDepartment of Obstetrics and Gynecology, the First Affiliated Hospital of Kunming Medical University, PO box 650032, No.295, Xi Chang Road, Kunming, Yunnan, China. marunmeikmmc@163.com.
Kunming Medical University · CNFirst Affiliated Hospital of Kunming Medical University · CNChinese University of Hong Kong · CN

Funding

Innovative Research Group Project of the National Natural Science Foundation of China No: 81760274the Key Science and Technology projects form the Department of Yunnan Science and Technology 2018ZF009
6 · The paper itself

Abstract

backgroundChinese population has a high prevalence of chronic hepatitis B virus (HBV) infection, the impact of which on pregnancy outcome remains controversial. A single-center retrospective cohort study was performed in Kunming, a multi-ethnic city in south-western China to examine this issue.

methodsThe singleton pregnancies delivering at ≥28 weeks gestation under our care in 2005-2017 constituted the study cohort. Maternal characteristics and pregnancy outcome were compared between mothers with and without seropositivity for hepatitis B surface antigen (HBsAg) determined at routine antenatal screening.

resultsAmong the 49,479 gravidae in the cohort, the 1624 (3.3%) HBsAg seropositive gravidae had a lower incidence of nulliparity (RR 0.963, 95% CI 0.935-0.992) and having received tertiary education (RR 0.829, 95% CI 0.784-0.827). There was no significant difference in the medical history, pregnancy complications, or labor or perinatal outcome, except that HBV carriers had significantly lower incidence of labor induction (RR 0.827, 95% CI 0.714-0.958) and of small-for-gestational age (SGA) infants (RR 0.854, 95% CI 0.734-0.994). On regression analysis, maternal HBV carriage was independently associated with spontaneous labor (aRR 1.231, 95% CI 1.044-1.451) and reduced SGA infants (aRR 0.842, 95% CI 0.712-0.997).

conclusionsOur 3.3% prevalence of maternal HBV infection was around the lower range determined in the Chinese population. The association with spontaneous labor and reduced SGA infants could have helped to promote the perpetuation of the infection through enhanced survival of the offspring infected at birth, thus explaining the high prevalence in the Chinese population.

Indexed as

Pregnancy Complications, InfectiousPregnancy OutcomeAdultChinaCohort StudiesFemaleHepatitis B, ChronicHepatitis B Surface AntigensHepatitis B virusHumansIncidenceInfant, NewbornMothersPregnancyPrevalenceRetrospective StudiesHepatitis B Surface AntigensChineseInfectionMaternal hepatitis B virusPregnancy outcomePrevalence

Identifiers

PMID33691634
PMCPMC7945294
OpenAlexW3112363671

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.