Temporal trends in neonatal mortality and morbidity following spontaneous and clinician-initiated preterm birth in Washington State USA: a population-based study

摘要

ObjectiveAfter a decade of increase, the preterm birth (PTB) rate has declined in the USA since 2006, with the largest decline at late preterm (34–36 weeks). We described concomitant changes in gestational age-specific rates of neonatal mortality and morbidity following spontaneous and clinician-initiated PTB among singleton infants.