biostudies-literatureUnknown98(1)Roggero P<h4>Objective</h4>To examine the relationship between etiologically-based preterm birth sub-groups and early postnatal growth according to gestational age at birth.<h4>Methods</h4>Prospective, multinational, cohort study involving 15 hospitals that monitored preterm newborns to hospital discharge. Measures/exposures: maternal demographics; etiologically-based preterm birth sub-groups; very, moderate and late preterm categories, and feeding.<h4>Primary outcomes</h4>serial anthropometric measures expressed as z-scores of the INTERGROWTH-21^st preterm postnatal growth standards.<h4>Results</h4>We included 2320 singletons and 1180 twins: very=24.4% (n = 856, including 178 < 28 weeks' gestation); moderate=16.9% (n = 592) and late preterm=58.6% (n = 2052). The median (interquartile ranPediatric research241-249https://www.ebi.ac.uk/biostudies/studies/S-EPMC12411233biostudies-literaturePostnatal growth of etiologically characterized preterm newborns according to gestational age at birth.PMC12411233Zarco IACRoggero PRauch SAIsmail LCTavcioska GShekharappa CBPapageorghiou ANieto RVillar JOchieng RConti CSAsibey JGunier RBTuzun FMosca FRenau MIMenis CMarkelova MAriff SWinsey AGiuliani FLapillonne ARyumina IDuah JAEskenazi BMadrid BFDeantoni SLambert AKennedy SBhutta ZRego MASfalsePostnatal growth of etiologically characterized preterm newborns according to gestational age at birth.<h4>Objective</h4>To examine the relationship between etiologically-based preterm birth sub-groups and early postnatal growth according to gestational age at birth.<h4>Methods</h4>Prospective, multinational, cohort study involving 15 hospitals that monitored preterm newborns to hospital discharge. Measures/exposures: maternal demographics; etiologically-based preterm birth sub-groups; very, moderate and late preterm categories, and feeding.<h4>Primary outcomes</h4>serial anthropometric measures expressed as z-scores of the INTERGROWTH-21^st preterm postnatal growth standards.<h4>Results</h4>We included 2320 singletons and 1180 twins: very=24.4% (n = 856, including 178 < 28 weeks' gestation); moderate=16.9% (n = 592) and late preterm=58.6% (n = 2052). The median (interquartile ran2025-01-01T00:00:00Z2025 Jul2026-04-08T16:07:26.088Z2026-04-08T06:05:24.085ZS-EPMC124112333960961310.1038/s41390-024-03735-x