TY - JOUR
T1 - Neonatal mortality risk of large‐for‐gestational‐age and macrosomic live births in 15 countries, including 115.6 million nationwide linked records, 2000–2020
AU - Suárez‐Idueta, Lorena
AU - Ohuma, Eric O.
AU - Chang, Chia‐Jung
AU - Hazel, Elizabeth A.
AU - Yargawa, Judith
AU - Okwaraji, Yemisrach B.
AU - Bradley, Ellen
AU - Gordon, Adrienne
AU - Sexton, Jessica
AU - Lawford, Harriet L. S.
AU - Paixao, Enny S.
AU - Falcão, Ila Rocha
AU - Lisonkova, Sarka
AU - Wen, Qi
AU - Velebil, Petr
AU - Jírová, Jitka
AU - Horváth‐Puhó, Erzsebet
AU - Sørensen, Henrik T.
AU - Sakkeus, Luule
AU - Abuladze, Lili
AU - Yunis, Khalid A.
AU - Al Bizri, Ayah
AU - Alvarez, Sonia Lopez
AU - Broeders, Lisa
AU - van Dijk, Aimée E.
AU - Alyafei, Fawziya
AU - AlQubaisi, Mai
AU - Razaz, Neda
AU - Söderling, Jonas
AU - Smith, Lucy K.
AU - Matthews, Ruth J.
AU - Lowry, Estelle
AU - Rowland, Neil
AU - Wood, Rachael
AU - Monteath, Kirsten
AU - Pereyra, Isabel
AU - Pravia, Gabriella
AU - Lawn, Joy E.
AU - Blencowe, Hannah
AU - Flenady, Vicki
AU - Warrilow, Kara
AU - Lawford, Harriet
AU - Barreto, Mauricio Lima
AU - Falcão, Ila Rocha
AU - Horváth‐Puhó, Erzsébet
AU - Abuladze, Liili
AU - Nakad, Pascale
AU - Flores, Arturo Barranco
AU - Gonzalez Roldan, Jesus Felipe
AU - Alyafei, Fawzia
AU - the National Vulnerable Newborn Mortality Collaborative Group and the Vulnerable Newborn Measurement Core Group
PY - 2023/11/27
Y1 - 2023/11/27
N2 - ObjectiveWe aimed to compare the prevalence and neonatal mortality associated with large for gestational age (LGA) and macrosomia among 115.6 million live births in 15 countries, between 2000 and 2020.DesignPopulation-based, multi-country study.SettingNational healthcare systems.PopulationLiveborn infants.MethodsWe used individual-level data identified for the Vulnerable Newborn Measurement Collaboration. We calculated the prevalence and relative risk (RR) of neonatal mortality among live births born at term + LGA (>90th centile, and also >95th and >97th centiles when the data were available) versus term + appropriate for gestational age (AGA, 10th–90th centiles) and macrosomic (≥4000, ≥4500 and ≥5000 g, regardless of gestational age) versus 2500–3999 g. INTERGROWTH 21st served as the reference population.Main outcome measuresPrevalence and neonatal mortality risks.ResultsLarge for gestational age was common (median prevalence 18.2%; interquartile range, IQR, 13.5%–22.0%), and overall was associated with a lower neonatal mortality risk compared with AGA (RR 0.83, 95% CI 0.77–0.89). Around one in ten babies were ≥4000 g (median prevalence 9.6% (IQR 6.4%–13.3%), with 1.2% (IQR 0.7%–2.0%) ≥4500 g and with 0.2% (IQR 0.1%–0.2%) ≥5000 g). Overall, macrosomia of ≥4000 g was not associated with increased neonatal mortality risk (RR 0.80, 95% CI 0.69–0.94); however, a higher risk was observed for birthweights of ≥4500 g (RR 1.52, 95% CI 1.10–2.11) and ≥5000 g (RR 4.54, 95% CI 2.58–7.99), compared with birthweights of 2500–3999 g, with the highest risk observed in the first 7 days of life.ConclusionsIn this population, birthweight of ≥4500 g was the most useful marker for early mortality risk in big babies and could be used to guide clinical management decisions.
AB - ObjectiveWe aimed to compare the prevalence and neonatal mortality associated with large for gestational age (LGA) and macrosomia among 115.6 million live births in 15 countries, between 2000 and 2020.DesignPopulation-based, multi-country study.SettingNational healthcare systems.PopulationLiveborn infants.MethodsWe used individual-level data identified for the Vulnerable Newborn Measurement Collaboration. We calculated the prevalence and relative risk (RR) of neonatal mortality among live births born at term + LGA (>90th centile, and also >95th and >97th centiles when the data were available) versus term + appropriate for gestational age (AGA, 10th–90th centiles) and macrosomic (≥4000, ≥4500 and ≥5000 g, regardless of gestational age) versus 2500–3999 g. INTERGROWTH 21st served as the reference population.Main outcome measuresPrevalence and neonatal mortality risks.ResultsLarge for gestational age was common (median prevalence 18.2%; interquartile range, IQR, 13.5%–22.0%), and overall was associated with a lower neonatal mortality risk compared with AGA (RR 0.83, 95% CI 0.77–0.89). Around one in ten babies were ≥4000 g (median prevalence 9.6% (IQR 6.4%–13.3%), with 1.2% (IQR 0.7%–2.0%) ≥4500 g and with 0.2% (IQR 0.1%–0.2%) ≥5000 g). Overall, macrosomia of ≥4000 g was not associated with increased neonatal mortality risk (RR 0.80, 95% CI 0.69–0.94); however, a higher risk was observed for birthweights of ≥4500 g (RR 1.52, 95% CI 1.10–2.11) and ≥5000 g (RR 4.54, 95% CI 2.58–7.99), compared with birthweights of 2500–3999 g, with the highest risk observed in the first 7 days of life.ConclusionsIn this population, birthweight of ≥4500 g was the most useful marker for early mortality risk in big babies and could be used to guide clinical management decisions.
KW - large for gestational age
KW - fetal macrosomia
KW - neonatal mortality
KW - pregnancy
KW - infant
U2 - 10.1111/1471-0528.17706
DO - 10.1111/1471-0528.17706
M3 - Article
SN - 1470-0328
JO - BJOG: An International Journal of Obstetrics and Gynaecology
JF - BJOG: An International Journal of Obstetrics and Gynaecology
ER -