Evidence map›Paper›PMID 35764962›Full record

ArticleBMC pregnancy and childbirth2022

Analysis of the risk of complications during pregnancy in pregnant women with assisted reproductive technology: a retrospective study using registry linkage from 2013 to 2018 in Shanghai, China.

Mulan He, Xiaoxi Sun, Chunfang Wang, Yilun Sui

Open access · goldAbstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
11.0field-weighted citation impact, top 1% 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, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
  2. [Analysis of Maternal Pregnancy Characteristics and Adverse Neonatal Birth Outcomes at a Single Center From 2017 to 2022].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2026
    Article
  3. Observational
  4. Article
  5. Association betweenFrontiers in endocrinology · 2026
    Article
  6. Risk Factors for Gestational Diabetes Mellitus in Mainland China: A Systematic Review and Meta-Analysis.Diabetes, metabolic syndrome and obesity : targets and therapy · 2025
    Review
  7. Article
  8. Review
  9. Article
  10. Perinatal complications and neonatal outcomes inFrontiers in endocrinology · 2024
    Article
  11. Article
  12. Article
  13. Incidence of complications amongJournal of medicine and life · 2023
    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

4 authors at 3 institutions in 1 country.

Mulan HeObstetrics and Gynecology Hospital of Fudan University, 352#, Dalin Road, Shanghai, 200011, China.
Xiaoxi SunObstetrics and Gynecology Hospital of Fudan University, 352#, Dalin Road, Shanghai, 200011, China. xiaoxi_sun@aliyun.com.
Chunfang WangVital Statistical Department, Institute of Health Information, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China.
Yilun SuiShanghai JiAi Genetics & IVF Institute, Shanghai, 200011, China.
Obstetrics and Gynecology Hospital of Fudan University · CNShangHai JiAi Genetics & IVF Institute · CNShanghai Municipal Center For Disease Control Prevention · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo evaluate the differences in pregnancy outcomes between assisted reproductive technology (ART) patients and natural pregnant women in Shanghai, China in the past 6 years objectively. And to assess the feasibility of the research method of registry-database linkage in mainland China.

methodsThis retrospective study was conducted using registry-database linkage. A total of 8102 pregnancies with ART and 8096 parturients with spontaneous conception (SC) from 10 reproductive centers and 111 hospitals composed our retrospective study. The primary outcomes were the rates of obstetric complications (pregnancy-induced hypertention [PIH], gestational diabetes mellitus [GDM], placenta previa, mode of delivery, preterm birth [PTB], low birth weight [LBW], and macrosomia). The prenatal outcomes were compared between ART and SC parturients, frozen-thawed embryo transfer (FET) and fresh embryo transfer, and in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). We calculated odds ratios (ORs) and 95% confidence intervals (CIs).

resultsThe final matching rate of the target population was 92% by using registry linkage. ART resulted in a higher rate of multiple birth, PTB, LBW, cesarean section, placenta previa and GDM compared with SC in the singleton cohort. In ART patients, pregnant women with FET had a significantly higher risk of PIH than those with fresh embryo transfer (14.1% Vs 9.3%, AOR1.528, 95% CI 1.303-1.793), but there was no difference between IVF and ICSI. FET is also related to the severity of PIH.

conclusionsART increased the rate of complications during pregnancy, the risk and severity of PIH in patients with FET was higher than that in patients with fresh embryo transfer. The registry-database linkage study is an objective and feasible research method in mainland China.

Indexed as

Diabetes, GestationalPlacenta PreviaPremature BirthCesarean SectionChinaFemaleHumansInfant, NewbornMalePregnancyPregnancy OutcomePregnant PeopleRegistriesRetrospective StudiesSemenAssisted reproductive technologyFrozen-thawed blastocyst transferPerinatal outcomePregnancy-induced hypertensionRegistry linkage study

Identifiers

PMID35764962
PMCPMC9241204
OpenAlexW4283644759

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LicenceCC BY
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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.