Evidence map›Paper›PMID 30115949›Full record

ArticleScientific reports2018

Pregnancy Outcomes in Women of Advanced Maternal Age: a Retrospective Cohort Study from China.

Dan Shan, Pei-Yuan Qiu, Yu-Xia Wu, Qian Chen, Ai-Lin Li, Sivakumar Ramadoss, Ran-Ran Wang, Ya-Yi Hu

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
12.3field-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

74 citing papers in PubMed, 162 citations in OpenAlex.

  1. Article
  2. Pregnancy Outcome in Women Aged 40 Years and Above: A Cross Sectional Study.Journal of obstetrics and gynaecology of India · 2026
    Article
  3. Article
  4. Article
  5. [Association Study of Parity With Adverse Pregnancy Outcomes].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2026
    Article
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  16. Review
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  19. Article
  20. [Analysis of Risk Factors for Recurrent Pregnancy Loss in Patients UndergoingSichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2024
    Article

14 more citing papers are in PubMed but not listed here.

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

8 authors at 4 institutions in 2 countries.

Dan ShanDepartment of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Pei-Yuan QiuWest China School of Public Health, Sichuan University, Chengdu, Sichuan, China.
Yu-Xia WuDepartment of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Qian ChenDepartment of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China.
Ai-Lin LiDepartment of Ophthalmology, Chengde Medical University, Chengde, Hebei, China.
Sivakumar RamadossDepartment of Obstetrics and Gynaecology and Department of Molecular and Medical Pharmacology David Geffen School of Medicine at University of California at Los Angeles; Jonsson Comprehensive Cancer Centre, Los Angeles, CA, USA.
Ran-Ran WangWest China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China.
Ya-Yi HuDepartment of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China. yayihuscu@sina.com.
Sichuan University · CNChengde Medical University · CNUCLA Jonsson Comprehensive Cancer CenterUniversity of California, Los Angeles · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This retrospective cohort study attempts to investigate pregnancy complications and adverse pregnancy outcomes in women of advanced maternal age (AMA). Data were extracted from electronic medical records system at West China Second University Hospital of Sichuan University from January 2013 to July 2016. The study cohort consisted 8 subgroups of women on 4 different age levels (20-29 years, 30-34 years, 35-39 years and ≥40 years) and 2 different parities (primiparity and multiparity). In the study period, 38811 women gave birth at our hospital, a randomized block was used to include 2800 women of singleton pregnancy >28 gestational weeks, with 350 patients in each subgroup. Maternal complications and fetal outcomes were collected and defined according to relevant guidelines. Confounding factors representing maternal demographic characteristics were identified from previous studies and analysed in multivariate analysis. There was an increasing trend for the risks of adverse pregnancy outcomes with increasing age, especially in AMA groups. Our study showed that AMA, primiparity, maternal overweight or obesity, lower educational level and residence in rural area increased pregnancy complications and adverse fetal outcomes. Increased professional care as well as public concern is warranted.

Indexed as

Maternal AgePregnancy OutcomeAdultChinaCohort StudiesFemaleHumansPregnancyRetrospective StudiesRisk

Identifiers

PMID30115949
PMCPMC6095911
OpenAlexW2886135957

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.