{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,5]],"date-time":"2026-11-05T10:09:37Z","timestamp":1793873377902,"version":"4.6.1"},"reference-count":31,"publisher":"Wiley","issue":"S8","license":[{"start":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T00:00:00Z","timestamp":1683504000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010409","name":"Children's Investment Fund Foundation","doi-asserted-by":"publisher","award":["1803\u201002535"],"award-info":[{"award-number":["1803\u201002535"]}],"id":[{"id":"10.13039\/100010409","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BJOG"],"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To compare neonatal mortality associated with six novel vulnerable newborn types in 125.5\u2009million live births across 15 countries, 2000\u20132020.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>Population\u2010based, multi\u2010country study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>National data systems in 15 middle\u2010 and high\u2010income countries.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We used individual\u2010level data sets identified for the Vulnerable Newborn Measurement Collaboration. We examined the contribution to neonatal mortality of six newborn types combining gestational age (preterm [PT] versus term [T]) and size\u2010for\u2010gestational age (small [SGA], &lt;10th centile, appropriate [AGA], 10th\u201390th centile or large [LGA], &gt;90th centile) according to INTERGROWTH\u201021st newborn standards. Newborn babies with PT or SGA were defined as small and T\u2009+\u2009LGA was considered as large. We calculated risk ratios (RRs) and population attributable risks (PAR%) for the six newborn types.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Main outcome measures<\/jats:title>\n                    <jats:p>Mortality of six newborn types.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Of 125.5\u2009million live births analysed, risk ratios were highest among PT\u2009+\u2009SGA (median 67.2, interquartile range [IQR] 45.6\u201373.9), PT\u2009+\u2009AGA (median 34.3, IQR 23.9\u201337.5) and PT\u2009+\u2009LGA (median 28.3, IQR 18.4\u201332.3). At the population level, PT\u2009+\u2009AGA was the greatest contributor to newborn mortality (median PAR% 53.7, IQR 44.5\u201354.9). Mortality risk was highest among newborns born before 28\u2009weeks (median RR 279.5, IQR 234.2\u2013388.5) compared with babies born between 37 and 42 completed weeks or with a birthweight less than 1000\u2009g (median RR 282.8, IQR 194.7\u2013342.8) compared with those between 2500\u2009g and 4000\u2009g as a reference group.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Preterm newborn types were the most vulnerable, and associated with the highest mortality, particularly with co\u2010existence of preterm and SGA. As PT\u2009+\u2009AGA is more prevalent, it is responsible for the greatest burden of neonatal deaths at population level.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/1471-0528.17506","type":"journal-article","created":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T18:32:25Z","timestamp":1683570745000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Neonatal mortality risk for vulnerable newborn types in 15 countries using 125.5\u2009million nationwide birth outcome records, 2000\u20132020"],"prefix":"10.1111","volume":"132","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0909-7737","authenticated-orcid":false,"given":"Lorena","family":"Su\u00e1rez\u2010Idueta","sequence":"first","affiliation":[{"name":"Mexican Society of Public Health  Mexico City 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