Association of body mass index and maternal age with first stage duration of labour

Abstract To evaluate associations between early-pregnancy body mass index (BMI) and active first stage labour duration, accounting for possible interaction with maternal age, we conducted a cohort study of women with spontaneous onset of labour allocated to Robson group 1. Quantile regression analys...

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Autores principales:	Louise Lundborg, Xingrong Liu, Katarina Åberg, Anna Sandström, Ellen L. Tilden, Olof Stephansson, Mia Ahlberg
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/47dd2e94ebab493bb083de26641ff020
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spelling	oai:doaj.org-article:47dd2e94ebab493bb083de26641ff0202021-12-02T18:34:13ZAssociation of body mass index and maternal age with first stage duration of labour10.1038/s41598-021-93217-52045-2322https://doaj.org/article/47dd2e94ebab493bb083de26641ff0202021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93217-5https://doaj.org/toc/2045-2322Abstract To evaluate associations between early-pregnancy body mass index (BMI) and active first stage labour duration, accounting for possible interaction with maternal age, we conducted a cohort study of women with spontaneous onset of labour allocated to Robson group 1. Quantile regression analysis was performed to estimate first stage labour duration between BMI categories in two maternal age subgroups (more and less than 30 years). Results show that obesity (BMI > 30) among younger women (< 30 years) increased the median labour duration of first stage by 30 min compared with normal weight women (BMI < 25), and time difference estimated at the 90th quantile was more than 1 h. Active first stage labour time differences between obese and normal weight women was modified by maternal age. In conclusion: (a) obesity is associated with longer duration of first stage of labour, and (b) maternal age is an effect modifier for this association. This novel finding of an effect modification between BMI and maternal age contributes to the body of evidence that supports a more individualized approach when describing labour duration.Louise LundborgXingrong LiuKatarina ÅbergAnna SandströmEllen L. TildenOlof StephanssonMia AhlbergNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Louise Lundborg Xingrong Liu Katarina Åberg Anna Sandström Ellen L. Tilden Olof Stephansson Mia Ahlberg Association of body mass index and maternal age with first stage duration of labour
description	Abstract To evaluate associations between early-pregnancy body mass index (BMI) and active first stage labour duration, accounting for possible interaction with maternal age, we conducted a cohort study of women with spontaneous onset of labour allocated to Robson group 1. Quantile regression analysis was performed to estimate first stage labour duration between BMI categories in two maternal age subgroups (more and less than 30 years). Results show that obesity (BMI > 30) among younger women (< 30 years) increased the median labour duration of first stage by 30 min compared with normal weight women (BMI < 25), and time difference estimated at the 90th quantile was more than 1 h. Active first stage labour time differences between obese and normal weight women was modified by maternal age. In conclusion: (a) obesity is associated with longer duration of first stage of labour, and (b) maternal age is an effect modifier for this association. This novel finding of an effect modification between BMI and maternal age contributes to the body of evidence that supports a more individualized approach when describing labour duration.
format	article
author	Louise Lundborg Xingrong Liu Katarina Åberg Anna Sandström Ellen L. Tilden Olof Stephansson Mia Ahlberg
author_facet	Louise Lundborg Xingrong Liu Katarina Åberg Anna Sandström Ellen L. Tilden Olof Stephansson Mia Ahlberg
author_sort	Louise Lundborg
title	Association of body mass index and maternal age with first stage duration of labour
title_short	Association of body mass index and maternal age with first stage duration of labour
title_full	Association of body mass index and maternal age with first stage duration of labour
title_fullStr	Association of body mass index and maternal age with first stage duration of labour
title_full_unstemmed	Association of body mass index and maternal age with first stage duration of labour
title_sort	association of body mass index and maternal age with first stage duration of labour
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/47dd2e94ebab493bb083de26641ff020
work_keys_str_mv	AT louiselundborg associationofbodymassindexandmaternalagewithfirststagedurationoflabour AT xingrongliu associationofbodymassindexandmaternalagewithfirststagedurationoflabour AT katarinaaberg associationofbodymassindexandmaternalagewithfirststagedurationoflabour AT annasandstrom associationofbodymassindexandmaternalagewithfirststagedurationoflabour AT ellenltilden associationofbodymassindexandmaternalagewithfirststagedurationoflabour AT olofstephansson associationofbodymassindexandmaternalagewithfirststagedurationoflabour AT miaahlberg associationofbodymassindexandmaternalagewithfirststagedurationoflabour
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Association of body mass index and maternal age with first stage duration of labour

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