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Differences in Birthweight Outcomes: A Longitudinal Study Based on Siblings

Objectives: We investigate the differences in birthweight between first- and second-borns, evaluating the impact of changes in pregnancy (e.g., gestational age), demographic (e.g., age), and social (e.g., education level, marital status) maternal characteristics. Data and Methods: All analyses are p...

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Detalles Bibliográficos
Autores principales: Bacci, Silvia, Bartolucci, Francesco, Chiavarini, Manuela, Minelli, Liliana, Pieroni, Luca
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4076673/
https://www.ncbi.nlm.nih.gov/pubmed/25003169
http://dx.doi.org/10.3390/ijerph110606472
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author Bacci, Silvia
Bartolucci, Francesco
Chiavarini, Manuela
Minelli, Liliana
Pieroni, Luca
author_facet Bacci, Silvia
Bartolucci, Francesco
Chiavarini, Manuela
Minelli, Liliana
Pieroni, Luca
author_sort Bacci, Silvia
collection PubMed
description Objectives: We investigate the differences in birthweight between first- and second-borns, evaluating the impact of changes in pregnancy (e.g., gestational age), demographic (e.g., age), and social (e.g., education level, marital status) maternal characteristics. Data and Methods: All analyses are performed on data collected in Umbria (Italy) taking into account a set of 792 women who delivered twice from 2005 to 2008. Firstly, we use a univariate paired t-test for the comparison between weights of first- and second-borns; Secondly, we use linear and nonlinear regression approaches in order to: (i) evaluate the effect of demographic and social maternal characteristics and (ii) predict the odds-ratio of low and high birthweight infants, respectively. Results: We find that the birthweight of second-borns is significantly higher than that of first-borns. Statistically significant effects are related with a longer gestational age, an increased number of visits during the pregnancy, and the gender of infants. On the other hand, we do not observe any significant effect related with mother’s age and with other characteristics of interest.
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spelling pubmed-40766732014-07-02 Differences in Birthweight Outcomes: A Longitudinal Study Based on Siblings Bacci, Silvia Bartolucci, Francesco Chiavarini, Manuela Minelli, Liliana Pieroni, Luca Int J Environ Res Public Health Article Objectives: We investigate the differences in birthweight between first- and second-borns, evaluating the impact of changes in pregnancy (e.g., gestational age), demographic (e.g., age), and social (e.g., education level, marital status) maternal characteristics. Data and Methods: All analyses are performed on data collected in Umbria (Italy) taking into account a set of 792 women who delivered twice from 2005 to 2008. Firstly, we use a univariate paired t-test for the comparison between weights of first- and second-borns; Secondly, we use linear and nonlinear regression approaches in order to: (i) evaluate the effect of demographic and social maternal characteristics and (ii) predict the odds-ratio of low and high birthweight infants, respectively. Results: We find that the birthweight of second-borns is significantly higher than that of first-borns. Statistically significant effects are related with a longer gestational age, an increased number of visits during the pregnancy, and the gender of infants. On the other hand, we do not observe any significant effect related with mother’s age and with other characteristics of interest. MDPI 2014-06 2014-06-20 /pmc/articles/PMC4076673/ /pubmed/25003169 http://dx.doi.org/10.3390/ijerph110606472 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Bacci, Silvia
Bartolucci, Francesco
Chiavarini, Manuela
Minelli, Liliana
Pieroni, Luca
Differences in Birthweight Outcomes: A Longitudinal Study Based on Siblings
title Differences in Birthweight Outcomes: A Longitudinal Study Based on Siblings
title_full Differences in Birthweight Outcomes: A Longitudinal Study Based on Siblings
title_fullStr Differences in Birthweight Outcomes: A Longitudinal Study Based on Siblings
title_full_unstemmed Differences in Birthweight Outcomes: A Longitudinal Study Based on Siblings
title_short Differences in Birthweight Outcomes: A Longitudinal Study Based on Siblings
title_sort differences in birthweight outcomes: a longitudinal study based on siblings
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4076673/
https://www.ncbi.nlm.nih.gov/pubmed/25003169
http://dx.doi.org/10.3390/ijerph110606472
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