Evidence map›Paper›PMID 29534760›Full record

ArticleReproductive health2018

Temporal trends of preterm birth in Shenzhen, China: a retrospective study.

Changchang Li, Zhijiang Liang, Michael S Bloom, Qiong Wang, Xiaoting Shen, Huanhuan Zhang, Suhan Wang, Weiqing Chen, Yan Lin, Qingguo Zhao and 1 more

Open access · goldAbstract read
In one paragraph

Article in Reproductive health, 2018. 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
8.3field-weighted citation impact, top 2% 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, 38 citations in OpenAlex.

  1. Pooled it
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  4. [Physical growth and neurodevelopment of preterm infants at the corrected age of 18-24 months].Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2023
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  10. [A multicenter study of the birth condition of preterm infants and the causes of preterm birth in Henan Province, China].Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2021
    Article
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  14. Impact of theOpen access Macedonian journal of medical sciences · 2019
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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

11 authors at 5 institutions in 2 countries.

Changchang LiDepartment of Health Policy and Management, School of Public Health, Sun Yat-sen University, 74 Zhongshan Road #2, Guangzhou, 510080, China.
Zhijiang LiangDepartment of Public Health, Guangdong Women and Children Hospital, 521, 523 Xing Nan Street, Guangzhou, 511442, China.
Michael S BloomDepartments of Environmental Health Sciences and Epidemiology and Biostatistics, University at Albany, State University of New York, Rensselaer, USA.
Qiong WangDepartment of Health Policy and Management, School of Public Health, Sun Yat-sen University, 74 Zhongshan Road #2, Guangzhou, 510080, China.
Xiaoting ShenCenter for Reproductive Medicine, The First Affiliated Hospital of Sun Yat-sen University, 74 Zhongshan Road #2, Guangzhou, 510080, China.
Huanhuan ZhangDepartment of Health Policy and Management, School of Public Health, Sun Yat-sen University, 74 Zhongshan Road #2, Guangzhou, 510080, China.
Suhan WangDepartment of Health Policy and Management, School of Public Health, Sun Yat-sen University, 74 Zhongshan Road #2, Guangzhou, 510080, China.
Weiqing ChenGuangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, 74 Zhongshan Road #2, Guangzhou, 510080, China.
Yan LinDepartment of Children Health Care, Shenzhen Women and Children Hospital, Shenzhen, China.
Qingguo ZhaoDepartment of Public Health, Guangdong Women and Children Hospital, 521, 523 Xing Nan Street, Guangzhou, 511442, China. zqgfrost@126.com.
Cunrui HuangDepartment of Health Policy and Management, School of Public Health, Sun Yat-sen University, 74 Zhongshan Road #2, Guangzhou, 510080, China. huangcr@mail.sysu.edu.cn.
Sun Yat-sen University · CNGuangdong Province Women and Children Hospital · CNShenzhen Children's Hospital · CNThe First Affiliated Hospital, Sun Yat-sen University · CNUniversity at Albany, State University of New York · US

Funding

Nature Science Foundation of Guangdong Province 2016A030313216the Asia-Pacific Network for Global Change CRRP2016-10MY-Huang
6 · The paper itself

Abstract

backgroundPreterm birth is the leading cause of child mortality under 5 years of age. Temporal trends in preterm birth rates are highly heterogeneous among countries and little information exists for China. To address this data gap, we investigated annual changes in preterm birth incidence rate and explored potential determinants of these changes in Shenzhen, China.

methodsA total of 1.4 million live births, during 2003-2012, were included from the Shenzhen birth registry. Negative-binominal regression models were used to estimate the annual percent changes in incidence. To identify the potential determinants behind temporal trends, we estimated the contribution of each changing risk factor to changes in rate by calculating the difference in population-attributable risk fraction.

resultsAnnual preterm birth incidence rates increased by 0.94% (95% CI 0.30%, 1.58%) overall, 3.60% (95% CI 2.73%, 4.48%) for medically induced, and 3.13% (95% CI 1.01%, 5.31%) for preterm premature rupture of membranes, but decreased by 2.34% (95% CI 1.62%, 3.06%) for spontaneous preterm labor. Higher maternal educational attainment (0.20 rate increase), lower proportion of inadequate prenatal care (0.15 rate reduction), more multipara (0.08 rate reduction), decreased proportion of preeclampsia or eclampsia (0.05 rate reduction), and larger proportion of young and older pregnant women (0.04 rate increase) were significant contributors to the overall change over time. Contributions of changing risk factors were different between preterm birth subtypes.

conclusionsPreterm birth rate in Shenzhen, China increased overall during 2003-2012, although trends varied across three preterm birth subtypes. The rising rates were associated with changes in maternal education and age.

Indexed as

ChinaEducational StatusFemaleHumansIncidencePregnancyPremature BirthPrenatal CareRegistriesRetrospective StudiesRisk FactorsSocioeconomic FactorsChinaIncidence rateMedically induced preterm birthPreterm birthSpontaneous preterm birthTemporal trend

Identifiers

PMID29534760
PMCPMC5851155
OpenAlexW2792363769

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.