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Pregnancy bias toward boys or girls: The Japan Environment and Children’s Study
The sex of the conceived child is a significant concern for parents. To verify whether there women have pregnancy bias toward boys or girls, we investigated whether the history of continuous same-sex pregnancy was associated with the subsequent child’s sex. We prospectively analyzed data from the Ja...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10289377/ https://www.ncbi.nlm.nih.gov/pubmed/37352332 http://dx.doi.org/10.1371/journal.pone.0287752 |
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author | So, Shuhei Tawara, Fumiko Taniguchi, Yu Kanayama, Naohiro |
author_facet | So, Shuhei Tawara, Fumiko Taniguchi, Yu Kanayama, Naohiro |
author_sort | So, Shuhei |
collection | PubMed |
description | The sex of the conceived child is a significant concern for parents. To verify whether there women have pregnancy bias toward boys or girls, we investigated whether the history of continuous same-sex pregnancy was associated with the subsequent child’s sex. We prospectively analyzed data from the Japan Environment and Children’s Study, a birth cohort study. We included all cases of singleton live births (n = 98 412). Women with pregnancy due to infertility treatment were excluded (n = 6255); Similarly, women with a history of miscarriage, artificial abortion, stillbirth, and multiple pregnancies, and those with missing data on the sex of the previous child were excluded. Altogether, 62 718 women were included. For the first live birth, a male-biased sex ratio of 1.055 was observed. Further, no significant difference was found in the sex ratio of the conceived child between women with one boy and those with one girl previously. However, when there were more than two children previously, the subsequently conceived child’s male/female sex ratio was significantly higher among boy-only mothers than among girl-only mothers. The results indicated that several pregnant women are biased toward conceiving either boys or girls. |
format | Online Article Text |
id | pubmed-10289377 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-102893772023-06-24 Pregnancy bias toward boys or girls: The Japan Environment and Children’s Study So, Shuhei Tawara, Fumiko Taniguchi, Yu Kanayama, Naohiro PLoS One Research Article The sex of the conceived child is a significant concern for parents. To verify whether there women have pregnancy bias toward boys or girls, we investigated whether the history of continuous same-sex pregnancy was associated with the subsequent child’s sex. We prospectively analyzed data from the Japan Environment and Children’s Study, a birth cohort study. We included all cases of singleton live births (n = 98 412). Women with pregnancy due to infertility treatment were excluded (n = 6255); Similarly, women with a history of miscarriage, artificial abortion, stillbirth, and multiple pregnancies, and those with missing data on the sex of the previous child were excluded. Altogether, 62 718 women were included. For the first live birth, a male-biased sex ratio of 1.055 was observed. Further, no significant difference was found in the sex ratio of the conceived child between women with one boy and those with one girl previously. However, when there were more than two children previously, the subsequently conceived child’s male/female sex ratio was significantly higher among boy-only mothers than among girl-only mothers. The results indicated that several pregnant women are biased toward conceiving either boys or girls. Public Library of Science 2023-06-23 /pmc/articles/PMC10289377/ /pubmed/37352332 http://dx.doi.org/10.1371/journal.pone.0287752 Text en © 2023 So 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 So, Shuhei Tawara, Fumiko Taniguchi, Yu Kanayama, Naohiro Pregnancy bias toward boys or girls: The Japan Environment and Children’s Study |
title | Pregnancy bias toward boys or girls: The Japan Environment and Children’s Study |
title_full | Pregnancy bias toward boys or girls: The Japan Environment and Children’s Study |
title_fullStr | Pregnancy bias toward boys or girls: The Japan Environment and Children’s Study |
title_full_unstemmed | Pregnancy bias toward boys or girls: The Japan Environment and Children’s Study |
title_short | Pregnancy bias toward boys or girls: The Japan Environment and Children’s Study |
title_sort | pregnancy bias toward boys or girls: the japan environment and children’s study |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10289377/ https://www.ncbi.nlm.nih.gov/pubmed/37352332 http://dx.doi.org/10.1371/journal.pone.0287752 |
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