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Birth weight reference for Japanese twins and risk factors for infant mortality: A population-based study

There is no standard birth weight curve for twins in Japan other than a prototype curve based on 1988–1991. Twins have a high perinatal mortality rate than singletons; therefore, we developed a new standard curve for twin birth weight using data from the 1995–2016 Vital Statistics and compared it wi...

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Autores principales: Ishida, Yuri, Takemoto, Yo, Kato, Masaya, Latif, Mahbub, Ota, Erika, Morisaki, Naho, Itakura, Atsuo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9282560/
https://www.ncbi.nlm.nih.gov/pubmed/35834520
http://dx.doi.org/10.1371/journal.pone.0271440
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author Ishida, Yuri
Takemoto, Yo
Kato, Masaya
Latif, Mahbub
Ota, Erika
Morisaki, Naho
Itakura, Atsuo
author_facet Ishida, Yuri
Takemoto, Yo
Kato, Masaya
Latif, Mahbub
Ota, Erika
Morisaki, Naho
Itakura, Atsuo
author_sort Ishida, Yuri
collection PubMed
description There is no standard birth weight curve for twins in Japan other than a prototype curve based on 1988–1991. Twins have a high perinatal mortality rate than singletons; therefore, we developed a new standard curve for twin birth weight using data from the 1995–2016 Vital Statistics and compared it with previous reports. We used 469,064 cases for analysis, excluding stillbirths and cases with missing values, and created a standard curve using LMS (statistical methods to vary the distribution by using skewness, median, and coefficient of variation) method. In comparison with previous reports, the mean birth weight decreased by 100–200 g. The groups with the lowest neonatal death rates (NDRs) and infant death rates (IDRs) were those with a birth weight of 1,500–2,499 g (NDR: 0.3%, IDR: 0.6%) and those born at 34–36 weeks (NDR: 0.2%, IDR: 0.4%). Compared to these, the IDR was significantly higher in the 2,500–3,999 g group and the 37–39 weeks group (incidence rate ratio (IRR): 1.1 in the 2,500–3,999 g group, IRR: 1.3 in the 37w0d–39w6d group). In particular, the risks of neonatal mortality and infant mortality were higher in infants born at a birth weight above 3,500 g. Infants born at a birth weight above 3,500 g may include recipients of twin-to-twin transfusion syndrome. The most common causes of infant mortality are accidental death and sudden infant death syndrome (SIDS). We considered the possibility that infants treated as healthy newborns and whose mothers were discharged from the hospital without adequate twin care guidance may be more likely to experience unintentional accidents and SIDS at home. The present study suggested that creating a new twin birth weight standard curve and guidance on managing twins at home for full-term and normal birth weight infants may lead to a reduction in infant deaths.
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spelling pubmed-92825602022-07-15 Birth weight reference for Japanese twins and risk factors for infant mortality: A population-based study Ishida, Yuri Takemoto, Yo Kato, Masaya Latif, Mahbub Ota, Erika Morisaki, Naho Itakura, Atsuo PLoS One Research Article There is no standard birth weight curve for twins in Japan other than a prototype curve based on 1988–1991. Twins have a high perinatal mortality rate than singletons; therefore, we developed a new standard curve for twin birth weight using data from the 1995–2016 Vital Statistics and compared it with previous reports. We used 469,064 cases for analysis, excluding stillbirths and cases with missing values, and created a standard curve using LMS (statistical methods to vary the distribution by using skewness, median, and coefficient of variation) method. In comparison with previous reports, the mean birth weight decreased by 100–200 g. The groups with the lowest neonatal death rates (NDRs) and infant death rates (IDRs) were those with a birth weight of 1,500–2,499 g (NDR: 0.3%, IDR: 0.6%) and those born at 34–36 weeks (NDR: 0.2%, IDR: 0.4%). Compared to these, the IDR was significantly higher in the 2,500–3,999 g group and the 37–39 weeks group (incidence rate ratio (IRR): 1.1 in the 2,500–3,999 g group, IRR: 1.3 in the 37w0d–39w6d group). In particular, the risks of neonatal mortality and infant mortality were higher in infants born at a birth weight above 3,500 g. Infants born at a birth weight above 3,500 g may include recipients of twin-to-twin transfusion syndrome. The most common causes of infant mortality are accidental death and sudden infant death syndrome (SIDS). We considered the possibility that infants treated as healthy newborns and whose mothers were discharged from the hospital without adequate twin care guidance may be more likely to experience unintentional accidents and SIDS at home. The present study suggested that creating a new twin birth weight standard curve and guidance on managing twins at home for full-term and normal birth weight infants may lead to a reduction in infant deaths. Public Library of Science 2022-07-14 /pmc/articles/PMC9282560/ /pubmed/35834520 http://dx.doi.org/10.1371/journal.pone.0271440 Text en © 2022 Ishida et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Ishida, Yuri
Takemoto, Yo
Kato, Masaya
Latif, Mahbub
Ota, Erika
Morisaki, Naho
Itakura, Atsuo
Birth weight reference for Japanese twins and risk factors for infant mortality: A population-based study
title Birth weight reference for Japanese twins and risk factors for infant mortality: A population-based study
title_full Birth weight reference for Japanese twins and risk factors for infant mortality: A population-based study
title_fullStr Birth weight reference for Japanese twins and risk factors for infant mortality: A population-based study
title_full_unstemmed Birth weight reference for Japanese twins and risk factors for infant mortality: A population-based study
title_short Birth weight reference for Japanese twins and risk factors for infant mortality: A population-based study
title_sort birth weight reference for japanese twins and risk factors for infant mortality: a population-based study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9282560/
https://www.ncbi.nlm.nih.gov/pubmed/35834520
http://dx.doi.org/10.1371/journal.pone.0271440
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