Evidence map›Paper›PMID 41716432›Full record

ArticleHealth science reports2026

Impact of Different Maternal Age Subgroups on Pregnancy Adverse Outcomes in China: A Multicenter Cohort Study.

Yi-Jie Zhang, Jianguo Zhou, Chao Chen

Abstract read
In one paragraph

Article in Health science reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. 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

3 authors.

Yi-Jie ZhangDepartment of Neonatology The Affiliated Hospital of Qingdao University Qingdao China.ORCID https://orcid.org/0000-0002-8016-0826
Jianguo ZhouDepartment of Neonatology Children's Hospital of Fudan University Shanghai China.
Chao ChenDepartment of Neonatology Children's Hospital of Fudan University Shanghai China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and Aims: To analyze the distribution pattern of maternal age and the impact of different maternal age subgroups on pregnancy adverse outcomes in China. Methods: This is a multicenter retrospective cohort study from 2010 to 2017. Live-born singletons were included. The pregnancy and perinatal adverse outcomes were collected. The χ Results: There were 216,404 mothers with a mean age of 27.4 ± 4.9 years. The proportion of mothers of < 20 years, 21-24 years, 25-29 years, 30-34 years, and ≥ 35 years was 2.5%, 26.0%, 42.5%, 20.1%, and 9.0%, respectively. Mean gestational age at delivery and birthweight were inverted Conclusion: This large cohort study demonstrated a significant impact of maternal age on pregnancy adverse outcomes in China, with the < 20 years, 20-24 years, 30-34 years, and ≥ 35 years age groups being associated with an enhanced risk compared with the 25-29 years age group. The high cesarean delivery rate was alarming.

Indexed as

adverse perinatal outcomesbirth weightelderly pregnant womenemergency cesarean sectionmaternal age

Identifiers

PMID41716432
PMCPMC12914140

What OpenQuestion holds

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Registered trials

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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.