Evidence map›Paper›PMID 30686955›Full record

ArticleJournal of Korean medical science2019

Trends in Birth Weight and the Incidence of Low Birth Weight and Advanced Maternal Age in Korea between 1993 and 2016.

Hye-Eun Kim, In Gyu Song, Sung-Hoon Chung, Yong-Sung Choi, Chong-Woo Bae

Open access · goldAbstract read
In one paragraph

Article in Journal of Korean medical science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
4.6field-weighted citation impact, top 5% 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

26 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
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  4. Effects of the expansion of integrated maternal-fetal intensive care centers on high-risk newborns in Korea.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2025
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  16. Analysis of the Incidence of Macrosomia in Japan by Parental Nationalities at 5-year Intervals From 1995 to 2020.Journal of preventive medicine and public health = Yebang Uihakhoe chi · 2023
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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

5 authors at 2 institutions in 1 country.

Hye-Eun KimDepartment of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0002-5179-5398
In Gyu SongCentral Hospice Center, National Cancer Center, Goyang, Korea.ORCID https://orcid.org/0000-0002-3205-9942
Sung-Hoon ChungDepartment of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0002-0352-9722
Yong-Sung ChoiDepartment of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0001-9181-7849
Chong-Woo BaeDepartment of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0002-0965-5674
Kyung Hee University · KRNational Cancer Center · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAs the aging society progresses, the average age of mothers is also increasing. Advanced maternal age has been known to be associated with perinatal outcomes, as well as birth weight (BW). In this study, we aimed to investigate the perinatal factors associated with low birth weight infants (LBWIs) using birth statistics of the Korean population.

methodsBirth statistics between 1993 and 2016 from the Korean Statistical Information Service were reviewed. We investigated 12,856,614 data points, which included the number of births, BWs, percentage of preterm births and LBWIs, multiple pregnancies, and maternal age.

resultsThe proportion of LBWIs delivered by mothers of advanced maternal age has gradually increased since 1993. In addition, the proportion of older mothers (≥ 35 years old) giving birth to LBWIs has increased over the years. Average BW has a negative correlation with the ratio of preterm births, LBW, multiple births, and advanced maternal age. The mean BW also has a negative correlation with maternal age.

conclusionThis study shows that the average BW continues to decline, and the incidence of LBWIs is increasing in Korea since 1993. This study also revealed that several perinatal factors, including percentage of preterm births, LBWIs, multiple births, and maternal age influence the mean BW. Although this study did not investigate the effects of decreasing mean BW on perinatal health, future research is worth discussing.

Indexed as

Birth WeightInfant, Low Birth WeightMaternal AgeAdolescentAdultDatabases, FactualFemaleHumansIncidenceInfant, NewbornLinear ModelsMiddle AgedPregnancyPregnancy, MultiplePremature BirthRepublic of KoreaBirth WeightInfant, Low Birth WeightKoreaMaternal AgePremature Birth

Identifiers

PMID30686955
PMCPMC6345638
OpenAlexW2912622299

What OpenQuestion holds

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LicenceCC BY-NC
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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.