Evidence map›Paper›PMID 33952183›Full record

Observational studyBMC pregnancy and childbirth2021

The incidence, risk factors and maternal and foetal outcomes of uterine rupture during different birth policy periods: an observational study in China.

Yangwen Zhou, Yi Mu, Peiran Chen, Yanxia Xie, Jun Zhu, Juan Liang

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in BMC pregnancy and childbirth, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.9field-weighted citation impact, top 23% 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, 16 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Yangwen ZhouNational Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Chengdu City, Sichuan Province, 610041, P. R. China.
Yi MuNational Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.
Peiran ChenNational Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Chengdu City, Sichuan Province, 610041, P. R. China.
Yanxia XieNational Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Chengdu City, Sichuan Province, 610041, P. R. China.
Jun ZhuNational Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Chengdu City, Sichuan Province, 610041, P. R. China. zhu_jun1@163.com.
Juan LiangNational Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Chengdu City, Sichuan Province, 610041, P. R. China. liangjuan002@163.com.
West China Second University Hospital of Sichuan University · CNSichuan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCurrently, there are no studies on changes in the incidence of uterine rupture or maternal and foetal outcomes in women with uterine rupture during different birth policy periods in China. Moreover, the results of association studies of maternal age, parity and previous caesarean section number with the risk of maternal and foetal outcomes in women with uterine rupture have not been consistent. This research aims to conduct and discuss the above two aspects.

methodsWe included singleton pregnant women with no maternal complications other than uterine rupture from January 2012 to June 2019 in China's National Maternal Near Miss Surveillance System. The data in this study did not differentiate between complete and partial uterine rupture and uterine dehiscence. Through Poisson regression analysis with a robust variance estimator, we compared the incidences of uterine rupture and maternal and foetal outcomes in women with uterine rupture during different birth policy periods in China and determined the relationship between maternal age, parity or previous caesarean section number and uterine rupture or maternal and foetal outcomes in women with uterine rupture.

resultsThis study included 8,637,723 pregnant women. The total incidences of uterine rupture were 0.13% (12,934) overall, 0.05% during the one-child policy, 0.12% during the partial two-child policy (aRR = 1.96; 95% CI: 1.53-2.52) and 0.22% (aRR = 2.89; 95% CI: 1.94 4.29) during the universal two-child policy. The maternal near miss and stillbirth rates in women with uterine rupture were respectively 2.35% (aRR = 17.90; 95% CI: 11.81-27.13) and 2.12% (aRR = 4.10; 95% CI: 3.19 5.26) overall, 5.46 and 8.18% during the first policy, 1.72% (aRR = 0.60; 95% CI: 0.32-1.17) and 2.02% (aRR = 0.57; 95% CI: 0.37-0.83) during the second policy, and 1.99% (aRR = 0.90; 95% CI: 0.52-1.53) and 1.04% (aRR = 0.36; 95% CI: 0.24-0.54) during the third policy. The risk of uterine rupture increased with parity and previous caesarean section number.

conclusionThe uterine rupture rate in China continues to increase among different birth policy periods, and the risk of maternal near miss among women with uterine rupture has not significantly improved. The Chinese government, obstetricians, and scholars should work together to reverse the rising rate of uterine rupture and improve the pregnancy outcomes in women with uterine rupture.

Indexed as

Family Planning PolicyCesarean SectionChinaFemaleHumansIncidenceParityPregnancyPregnancy OutcomeRisk FactorsStillbirthUterine RuptureBirth policyIncidencePregnancy outcomesRisk factorsUterine rupture

Identifiers

PMID33952183
PMCPMC8098017
OpenAlexW3158189290

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.