title: Timing and consequences of early term and late term deliveries.
abstract: OBJECTIVE
  To examine the timing of elective delivery and neonatal intensive care unit (NICU) utilization of electively delivered infants from 2008 to 2011.
  
  
  METHODS
  Analysis included 42,290 women with singleton gestation enrolled in a pregnancy education program, reporting uncomplicated pregnancies with elective labor induction (ELI) (n = 27,677) or scheduled cesarean delivery (SCD) (n = 14,613) at 37.0-41.9 weeks' gestation. Data were grouped by type and week of delivery (37.0-37.9, 38.0-38.9, and 39.0-41.9 weeks). ELI and SCD for each week of delivery from 2008 to 2011 and nursery utilization by delivery week were compared.
  
  
  RESULTS
  During the 2008-2011 timeframe, a shift in timing of ELI and SCD toward ≥39.0 weeks was observed. In 2008, 80.9% of ELI occurred at ≥39.0 weeks versus 92.6% in 2011 (p < 0.001). In 2008, 60.5% of SCD occurred at ≥39.0 weeks versus 78.1% in 2011 (p < 0.001). NICU admission and prolonged nursery stays were highest at 37.0-37.9 weeks for both groups.
  
  
  CONCLUSIONS
  We observed a shift toward later gestational age at elective delivery from 2008 to 2011 and increased NICU utilization for neonates born at <39 weeks' gestation.
authors.affiliation: Department of Obstetrics and Gynecology, MedStar Washington Hospital Center , Washington, DC , USA .
authors.forename: Laura
authors.initials: L
authors.lastname: Parikh
authors.forename: Jasbir
authors.initials: J
authors.lastname: Singh
authors.forename: Julia
authors.initials: J
authors.lastname: Timofeev
authors.forename: Christopher M
authors.initials: CM
authors.lastname: Zahn
authors.forename: Niki B
authors.initials: NB
authors.lastname: Istwan
authors.forename: Debbie J
authors.initials: DJ
authors.lastname: Rhea
authors.forename: Rita W
authors.initials: RW
authors.lastname: Driggers
mesh_terms: D000328:Adult; D002585:Cesarean Section / Q000009:adverse effects / Q000706:statistics & numerical data; D036861:Delivery, Obstetric / Q000009:adverse effects* / Q000379:methods* / Q000706:statistics & numerical data; D017558:Elective Surgical Procedures / Q000009:adverse effects / Q000706:statistics & numerical data; D005260:Female; D005865:Gestational Age; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D007231:Infant, Newborn; D007363:Intensive Care Units, Neonatal / Q000706:statistics & numerical data; D007751:Labor, Induced / Q000009:adverse effects / Q000706:statistics & numerical data; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology*; D047928:Premature Birth / Q000453:epidemiology*; D012189:Retrospective Studies; D047929:Term Birth; D013997:Time Factors; D055815:Young Adult
keywords: Early term birth; elective delivery; neonatal morbidity