Evidence map›Paper›PMID 33507393›Full record

ArticleJournal of anesthesia2021

Ethnic disparities in postpartum hemorrhage after cesarean delivery: a retrospective case-control study.

Yu Wang, Hexin Gao, Tuvshin Bao, Lijuan Yang, Guifeng Ding, Demu Ba, Shujun Sun, Yun Lin, Shanglong Yao

Open access · hybridAbstract read
In one paragraph

Article in Journal of anesthesia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 2 pooled it
2.3field-weighted citation impact, top 12% 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

3 citing papers in PubMed, 2 syntheses or guidelines pooled it, 9 citations in OpenAlex.

  1. Pooled it
  2. Prepartum Anemia and Risk of Postpartum Hemorrhage: A Meta-Analysis and Brief Review.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    Pooled it
  3. 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

9 authors at 4 institutions in 1 country.

Yu Wang *Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Hexin Gao *Department of Anesthesiology, Maternal and Child Health Hospital of Xinjiang Uyghur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China.
Tuvshin BaoDepartment of Anesthesiology, Inner Mongolia Maternal and Child Health Care Hospital, Hohhot, Inner Mongolia Autonomous Region, China.
Lijuan YangDepartment of Anesthesiology, Maternal and Child Health Hospital of Xinjiang Uyghur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China.
Guifeng DingDepartment of Anesthesiology, Maternal and Child Health Hospital of Xinjiang Uyghur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China.
Demu BaDepartment of Anesthesiology, People's Hospital of Bozhou, Bole, Xinjiang Uygur Autonomous Region, China.
Shujun SunDepartment of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Yun LinDepartment of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. franklinyun@hust.edu.cn.
Shanglong YaoDepartment of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. yaoshanglong@hust.edu.cn.ORCID http://orcid.org/0000-0001-6410-7331
Union Hospital · CNMaternal and Child Health Hospital of Xinjiang Uygur Autonomous Region · CNBozhou People's Hospital · CNInner Mongolia Maternal and Child Health · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo explore the relationship of ethnicity and postpartum hemorrhage (PPH) for women who underwent cesarean delivery (CD) and examine the risk factors for PPH in distinct ethnic groups in China.

methodsWe conducted case-control studies with the maternity data from the 11,778 CD cases, in Xinjiang Uygur Autonomous Region. Initially, multivariable logistic regression was used to estimate the disparity of race-ethnicity on the risk of PPH in ethnic Han, Uygur, Hui and Kazakh. Then, we performed case-control studies within two major ethnic groups, identifying the specific risk factors for PPH.

resultsEthnic Uygur were associated with a statistically significant increased odds [adjusted odds ratios (aOR) 2.05; 95% confidence interval (CI) 1.26-3.33] of PPH compared with ethnic Han. For subgroup analyses, in Uygur subgroup, general anesthesia (aOR 7.78; 95% CI 2.31-26.20); placenta previa (aOR 11.18; 95% CI 3.09-40.45); prenatal anemia (aOR 4.84; 95% CI 2.44-9.60); emergency surgery (aOR 4.22; 95% CI 1.95-9.13) were independently associated with PPH. In Han subgroup, general anesthesia (aOR 5.70; 95% CI 1.89-17.26); placenta previa (aOR 20.08; 95% CI 6.35-63.46); multiple pregnancy (aOR 7.21; 95% CI 1.61-32.37); body mass index (aOR 1.19; 95% CI 1.07-1.31) were the risk factors to PPH.

conclusionUygur have more tendency to PPH compared to Han, and risk factors for PPH in Uygur and Han groups may differ. Knowing these differences may be meaningful when planning interventions and resources for high-risk patients undergoing cesarean delivery, and we need more research aimed at risk factors for PPH.

Indexed as

Postpartum HemorrhageCase-Control StudiesChinaEthnicityFemaleHumansPregnancyRetrospective StudiesRisk FactorsEthnicityObstetric anesthesiaPostpartum hemorrhage

Identifiers

PMID33507393
PMCPMC7969550
OpenAlexW3122413609

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.