Evidence map›Paper›PMID 37156241›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2025

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

Lorena Suárez-Idueta, Judith Yargawa, Hannah Blencowe, Ellen Bradley, Yemisrach B Okwaraji, Veronica Pingray, Luz Gibbons, Adrienne Gordon, Kara Warrilow, Enny S Paixao and 41 more

Abstract read
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

51 authors.

Lorena Suárez-IduetaMexican Society of Public Health, Mexico City, Mexico.ORCID https://orcid.org/0000-0003-0909-7737
Judith YargawaMaternal, Adolescent, Reproductive & Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK.ORCID https://orcid.org/0000-0002-6299-2215
Hannah BlencoweMaternal, Adolescent, Reproductive & Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK.ORCID https://orcid.org/0000-0003-1556-3159
Ellen BradleyMaternal, Adolescent, Reproductive & Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK.ORCID https://orcid.org/0009-0009-4457-0762
Yemisrach B OkwarajiMaternal, Adolescent, Reproductive & Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK.ORCID https://orcid.org/0000-0002-4541-2856
Veronica PingrayDepartment of Mother & Child Health, Institute for Clinical Effectiveness and Health Policy, Buenos Aires, Argentina.ORCID https://orcid.org/0000-0002-7889-2825
Luz GibbonsDepartment of Mother & Child Health, Institute for Clinical Effectiveness and Health Policy, Buenos Aires, Argentina.ORCID https://orcid.org/0000-0002-0235-1635
Adrienne GordonFaculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.ORCID https://orcid.org/0000-0002-2328-1066
Kara WarrilowCentre for Research Excellence in Stillbirth, MRI-UQ, Mater Research Institute, The University of Queensland, Brisbane, Queensland, Australia.ORCID https://orcid.org/0000-0001-8742-1278
Enny S PaixaoMaternal, Adolescent, Reproductive & Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK.ORCID https://orcid.org/0000-0002-4797-908X
Ila Rocha FalcãoCentre of Data and Knowledge Integration for Health (CIDACS), Instituto Gonçalo Moniz, Fiocruz Bahia, Fundação Oswaldo Cruz, Salvador, Brazil.ORCID https://orcid.org/0000-0001-6961-3858
Sarka LisonkovaDepartment of Obstetrics & Gynaecology, University of British Columbia, Vancouver, British Columbia, Canada.ORCID https://orcid.org/0000-0002-1220-310X
Qi WenDepartment of Obstetrics & Gynaecology, University of British Columbia, Vancouver, British Columbia, Canada.
Francisco MardonesPontificia Universidad Católica de Chile, Santiago, Chile.ORCID https://orcid.org/0000-0002-0905-9493
Raúl Caulier-CisternaPontificia Universidad Católica de Chile, Santiago, Chile.ORCID https://orcid.org/0000-0002-0125-485X
Petr VelebilDepartment of Obstetrics and Gynaecology, Institute for the Care of Mother and Child, Prague, Czech Republic.ORCID https://orcid.org/0009-0001-0643-1069
Jitka JírováDepartment of Data Analysis, Institute of Health Information and Statistics of the Czech Republic, Prague, Czech Republic.
Erzsebet Horváth-PuhóDepartment of Clinical Epidemiology, Aarhus University, Aarhus N, Denmark.ORCID https://orcid.org/0000-0002-3594-2212
Henrik Toft SørensenDepartment of Clinical Epidemiology, Aarhus University, Aarhus N, Denmark.ORCID https://orcid.org/0000-0003-4299-7040
Luule SakkeusSchool of Governance, Law and Society, Estonian Institute for Population Studies, Tallinn University, Tallinn, Estonia.ORCID https://orcid.org/0000-0003-3785-183X
Lili AbuladzeSchool of Governance, Law and Society, Estonian Institute for Population Studies, Tallinn University, Tallinn, Estonia.ORCID https://orcid.org/0000-0002-0109-9757
Mika GisslerDepartment of Knowledge Brokers, THL Finnish Institute for Health and Welfare, Helsinki, Finland.ORCID https://orcid.org/0000-0001-8254-7525
Mohammad HeidarzadehDepartment of Paediatrics, Alzahra Hospital, Tabriz, Iran.ORCID https://orcid.org/0000-0002-4159-8294
Maziar Moradi-LakehDepartment of Community Medicine, Preventive Medicine and Public Health Research Centre, Iran University of Medical Sciences, Tehran, Iran.ORCID https://orcid.org/0000-0001-7381-5305
Khalid A YunisDepartment of Paediatrics and Adolescent Medicine, American University of Beirut, Beirut, Lebanon.ORCID https://orcid.org/0000-0002-6384-2745
Ayah Al BizriDepartment of Paediatrics and Adolescent Medicine, American University of Beirut, Beirut, Lebanon.ORCID https://orcid.org/0000-0002-0677-7879
Shamala D KaralasingamDepartment of Obstetrics and Gynaecology, Faculty of Medicine, University of Cyberjaya, Cyberjaya, Malaysia.ORCID https://orcid.org/0000-0002-4992-906X
Ravichandran JeganathanDepartment of Obstetrics & Gynaecology, Hospital Sultanah Aminah, Ministry of Health, Johor Bahru, Malaysia.ORCID https://orcid.org/0000-0002-3994-1452
Arturo BarrancoDirectorate of Health Information, Ministry of Health, Mexico City, Mexico.
Lisa BroedersPerined, Utrecht, The Netherlands.
Aimée E van DijkPerined, Utrecht, The Netherlands.
Luis HuichoCentro de Investigación en Salud Materna e Infantil, Centro de Investigación para el Desarrollo Integral y Sostenible and School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru.ORCID https://orcid.org/0000-0002-5272-5885
Hugo Guillermo Quezada-PinedoThe Generation R Study Group, Department of Paediatrics, Division of Neonatology, Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands.ORCID https://orcid.org/0000-0002-0641-7718
Kim Nail Cajachagua-TorresThe Generation R Study Group, Department of Paediatrics, Division of Neonatology, Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands.ORCID https://orcid.org/0000-0002-0213-6935
Fawziya AlyafeiHamad Medical Corporation, Doha, Qatar.ORCID https://orcid.org/0000-0001-6851-0654
Mai AlQubaisiHamad Medical Corporation, Doha, Qatar.
Geum Joon ChoDepartment of Obstetrics and Gynaecology, Korea University College of Medicine, Seoul, South Korea.ORCID https://orcid.org/0000-0001-6761-0944
Ho Yeon KimDepartment of Obstetrics and Gynaecology, Korea University College of Medicine, Seoul, South Korea.ORCID https://orcid.org/0000-0002-6469-8140
Neda RazazClinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.ORCID https://orcid.org/0000-0002-1273-0110
Jonas SöderlingClinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.ORCID https://orcid.org/0000-0001-9006-2835
Lucy K SmithDepartment of Health Sciences, College of Life Sciences, University of Leicester, Leicester, UK.ORCID https://orcid.org/0000-0001-9470-0793
Jennifer KurinczukNational Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK.
Estelle LowrySchool of Natural and Built Environment, Queen's University Belfast, Belfast, UK.ORCID https://orcid.org/0000-0002-4655-416X
Neil RowlandQueen's Management School, Queen's University Belfast, Belfast, UK.ORCID https://orcid.org/0000-0001-9755-1682
Rachael WoodPublic Health Scotland, Edinburgh, UK.ORCID https://orcid.org/0000-0003-4453-623X
Kirsten MonteathDepartment of Maternity and Sexual Health Team, Public Health Scotland, Edinburgh, UK.
Isabel PereyraCatholic University of the Maule, Región del Maule, Chile.ORCID https://orcid.org/0000-0002-4696-8063
Gabriella PraviaDepartment of Wellness and Health, Catholic University of Uruguay, Montevideo, Uruguay.ORCID https://orcid.org/0009-0006-5871-6257
Eric O OhumaMaternal, Adolescent, Reproductive & Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK.ORCID https://orcid.org/0000-0002-3116-2593
Joy E LawnMaternal, Adolescent, Reproductive & Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK.ORCID https://orcid.org/0000-0002-4573-1443
National Vulnerable Newborn Prevalence Collaborative Group and Vulnerable Newborn Measurement Core Group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo examine the prevalence of novel newborn types among 165 million live births in 23 countries from 2000 to 2021.

designPopulation-based, multi-country analysis.

settingNational data systems in 23 middle- and high-income countries. POPULATION: Liveborn infants.

methodsCountry 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 measuresPrevalence of six newborn types.

resultsWe 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.

conclusionsThe 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.

Indexed as

Birth WeightLive BirthDeveloped CountriesFemaleGestational AgeGlobal HealthHumansInfant, NewbornInfant, PrematureInfant, Small for Gestational AgeMalePregnancyPrevalenceRegistrieslow birthweightnewbornpreterm birthsize for gestational age

Identifiers

PMID37156241
PMCPMC12678069

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.