Vulnerable newborn types: Analysis of population-based registries for 165 million births in 23 countries, 2000-2021.

Lorena Suárez-Idueta ORCID logo ; Judith Yargawa ORCID logo ; Hannah Blencowe ORCID logo ; Ellen Bradley ORCID logo ; Yemisrach B Okwaraji ORCID logo ; Veronica Pingray ORCID logo ; Luz Gibbons ORCID logo ; Adrienne Gordon ORCID logo ; Kara Warrilow ORCID logo ; Enny S Paixao ORCID logo ; +41 more... Ila Rocha Falcão ORCID logo ; Sarka Lisonkova ORCID logo ; Qi Wen ; Francisco Mardones ORCID logo ; Raúl Caulier-Cisterna ORCID logo ; Petr Velebil ORCID logo ; Jitka Jírová ; Erzsebet Horváth-Puhó ORCID logo ; Henrik Toft Sørensen ORCID logo ; Luule Sakkeus ORCID logo ; Lili Abuladze ORCID logo ; Mika Gissler ORCID logo ; Mohammad Heidarzadeh ORCID logo ; Maziar Moradi-Lakeh ORCID logo ; Khalid A Yunis ORCID logo ; Ayah Al Bizri ORCID logo ; Shamala D Karalasingam ORCID logo ; Ravichandran Jeganathan ORCID logo ; Arturo Barranco ; Lisa Broeders ; Aimée E van Dijk ; Luis Huicho ORCID logo ; Hugo Guillermo Quezada-Pinedo ORCID logo ; Kim Nail Cajachagua-Torres ORCID logo ; Fawziya Alyafei ORCID logo ; Mai AlQubaisi ; Geum Joon Cho ORCID logo ; Ho Yeon Kim ORCID logo ; Neda Razaz ORCID logo ; Jonas Söderling ORCID logo ; Lucy K Smith ORCID logo ; Jennifer Kurinczuk ; Estelle Lowry ORCID logo ; Neil Rowland ORCID logo ; Rachael Wood ORCID logo ; Kirsten Monteath ; Isabel Pereyra ORCID logo ; Gabriella Pravia ORCID logo ; Eric O Ohuma ORCID logo ; Joy E Lawn ORCID logo ; National Vulnerable Newborn Prevalence Collaborative Group and V ; (2023) Vulnerable newborn types: Analysis of population-based registries for 165 million births in 23 countries, 2000-2021. BJOG : an international journal of obstetrics and gynaecology. ISSN 1470-0328 DOI: 10.1111/1471-0528.17505
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OBJECTIVE: To examine the prevalence of novel newborn types among 165 million live births in 23 countries from 2000 to 2021. DESIGN: Population-based, multi-country analysis. SETTING: National data systems in 23 middle- and high-income countries. POPULATION: Liveborn infants. METHODS: Country teams with high-quality data were invited to be part of the Vulnerable Newborn Measurement Collaboration. We classified live births by six newborn types based on gestational age information (preterm <37 weeks versus term ≥37 weeks) and size for gestational age defined as small (SGA, <10th centile), appropriate (10th-90th centiles), or large (LGA, >90th centile) for gestational age, according to INTERGROWTH-21st standards. We considered small newborn types of any combination of preterm or SGA, and term + LGA was considered large. Time trends were analysed using 3-year moving averages for small and large types. MAIN OUTCOME MEASURES: Prevalence of six newborn types. RESULTS: We analysed 165 017 419 live births and the median prevalence of small types was 11.7% - highest in Malaysia (26%) and Qatar (15.7%). Overall, 18.1% of newborns were large (term + LGA) and was highest in Estonia 28.8% and Denmark 25.9%. Time trends of small and large infants were relatively stable in most countries. CONCLUSIONS: The distribution of newborn types varies across the 23 middle- and high-income countries. Small newborn types were highest in west Asian countries and large types were highest in Europe. To better understand the global patterns of these novel newborn types, more information is needed, especially from low- and middle-income countries.


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