title: Neighbourhood deprivation and very preterm birth in an English and French cohort.
abstract: BACKGROUND
  Social factors affect the risk of very preterm birth and may affect subsequent outcomes in those born preterm. We assessed the influence of neighbourhood socio-economic characteristics on the risk and outcomes of singleton very preterm birth (<32 weeks of gestation) in two European regions with different health systems.
  
  
  METHODS
  Live births (n=1118) from a population-based cohort of very preterm infants in 2003 in Trent (UK) and Ile-de-France (France) regions were geocoded to their neighbourhood census tracts. Odds ratios for very preterm singleton birth by neighbourhood characteristics (unemployment rate, proportion manual workers, proportion with high school education only, non home ownership) were computed using infants enumerated in the census as a control population. The impact of neighbourhood variables was further assessed by pregnancy and delivery characteristics and short term infant outcomes.
  
  
  RESULTS
  Risk of very preterm singleton birth was higher in more deprived neighbourhoods in both regions (OR between 2.5 and 1.5 in the most versus least deprived quartiles). No consistent associations were found between neighbourhood deprivation and maternal characteristics or health outcomes for very preterm births, although infants in more deprived neighbourhoods were less likely to be breastfed at discharge.
  
  
  CONCLUSIONS
  Neighbourhood deprivation had a strong consistent impact on the risk of singleton very preterm birth in two European regions, but did not appear to be associated with maternal characteristics or infant outcomes. Differences in breastfeeding at discharge suggest that socio-economic factors may affect long term outcomes.
authors.affiliation: INSERM, UMR S953, Epidemiological Research Unit on Perinatal Health and Women's and Childrens' Health, Paris, France. mercedes.bonet-semenas@inserm.fr
authors.forename: Mercedes
authors.initials: M
authors.lastname: Bonet
authors.forename: Lucy K
authors.initials: LK
authors.lastname: Smith
authors.forename: Hugo
authors.initials: H
authors.lastname: Pilkington
authors.forename: Elizabeth S
authors.initials: ES
authors.lastname: Draper
authors.forename: Jennifer
authors.initials: J
authors.lastname: Zeitlin
mesh_terms: D000328:Adult; D001942:Breast Feeding / Q000706:statistics & numerical data; D004739:England / Q000453:epidemiology; D005260:Female; D005602:France / Q000453:epidemiology; D005865:Gestational Age; D006801:Humans; D062071:Infant, Extremely Premature; D007231:Infant, Newborn; D008297:Male; D016017:Odds Ratio; D011204:Poverty Areas; D011247:Pregnancy; D047928:Premature Birth / Q000453:epidemiology*; D012307:Risk Factors; D012959:Socioeconomic Factors; D055815:Young Adult