title: [Epidemiology of preterm birth: Prevalence, recent trends, short- and long-term outcomes].
abstract: Every year, approximately 15 million babies are born preterm worldwide (before 37 completed weeks of gestation), putting the global preterm birth rate at 11%; they are about 60,000 in France. About 85% of these births are moderate (32-33 weeks) to late preterm babies (34-36 weeks), 10% are very preterm babies (28-31 weeks) and 5% are extremely preterm babies (< 28 weeks). Though neonatal mortality rates are dropping, they remain high and are largely determined by gestational age at birth (over 10% mortality for infants born before 28 weeks, 5-10% at 28-31 weeks and 1-2% at 32-34 weeks). Severe neonatal morbidity and disabilities during childhood are also frequent and vary with gestational age. For example, the risk of motor or cognitive impairment is 2 to 3 times higher among children born between 34 and 36 weeks than among children born full-term. Therefore, every preterm baby must be carefully monitored. Recent cohort studies have focused on extremely preterm births; however, awareness of potential outcome and prognosis of all preterm babies is a crucial step for health professionals caring for these children. Huge disparities exist between high- and low-income countries, but also among high-income countries themselves.
authors.affiliation: Équipe de recherche en épidémiologie obstétricale, périnatale et pédiatrique, Inserm U1153, centre de recherche d'épidémiologie et statistique, Sorbonne Paris-Cité, bâtiment Port-Royal, 53, avenue de l'Observatoire, 75014 Paris, France; DHU risques et grossesse, 53, avenue de l'Observatoire, 75014 Paris, France. Electronic address: heloise.torchin@inserm.fr.
authors.forename: H
authors.initials: H
authors.lastname: Torchin
authors.affiliation: Équipe de recherche en épidémiologie obstétricale, périnatale et pédiatrique, Inserm U1153, centre de recherche d'épidémiologie et statistique, Sorbonne Paris-Cité, bâtiment Port-Royal, 53, avenue de l'Observatoire, 75014 Paris, France; URC-CIC P1419, groupe hospitalier Cochin-Hôtel-Dieu, Assistance publique-Hôpitaux de Paris, 75014 Paris, France; DHU risques et grossesse, 53, avenue de l'Observatoire, 75014 Paris, France.
authors.forename: P-Y
authors.initials: PY
authors.lastname: Ancel
authors.affiliation: Service de médecine et réanimation néonatales de Port-Royal, groupe hospitalier Cochin-Hôtel-Dieu, Assistance publique-Hôpitaux de Paris, université Paris Descartes, 53, avenue de l'Observatoire, 75014 Paris, France; DHU risques et grossesse, 53, avenue de l'Observatoire, 75014 Paris, France.
authors.forename: P-H
authors.initials: PH
authors.lastname: Jarreau
authors.affiliation: Équipe de recherche en épidémiologie obstétricale, périnatale et pédiatrique, Inserm U1153, centre de recherche d'épidémiologie et statistique, Sorbonne Paris-Cité, bâtiment Port-Royal, 53, avenue de l'Observatoire, 75014 Paris, France; Maternité Port-Royal, groupe hospitalier Cochin-Hôtel-Dieu, Assistance publique-Hôpitaux de Paris, université Paris Descartes, 53, avenue de l'Observatoire, 75014 Paris, France; DHU risques et grossesse, 53, avenue de l'Observatoire, 75014 Paris, France.
authors.forename: F
authors.initials: F
authors.lastname: Goffinet
mesh_terms: D005865:Gestational Age; D006801:Humans; D007235:Infant, Premature, Diseases / Q000453:epidemiology*; D047928:Premature Birth / Q000453:epidemiology*; D015995:Prevalence
keywords: Epidemiology; Morbidité à court et moyen terme; Preterm birth; Prématurité; Short- and long-term morbidity; Survie; Survival; Épidémiologie