title: Analysis of the birth defects among 61 272 live born infants in Beijing.
abstract: OBJECTIVE
  To investigate the birth defect condition in Haidian district of Beijing city, 61,272 live-born infants who were delivered in Haidian Maternal and Child Health Hospital from 2003 to the March of 2009 are analyzed.
  
  
  METHODS
  Data was collected from the hospital's medical records and from the birth defect surveillance.
  
  
  RESULTS
  Among the newborns studied, 1 076 were found having birth defect (17.56 per thousand). The most common birth defects are congenital heart defect, followed by dysmorphosis of external ear, polydactyly, hypospadia, cleft lip and palate. In addition, three birth defects that are not included in the birth defect surveillance list were enorchia, renal agenesis and giant hemangioma. The birth defect rates of preterm and small for gestational age infants are significantly higher than it of the term infants. The birth defect patterns for these two types of abnormal infants are distinct.
  
  
  CONCLUSIONS
  We have determined the pattern of birth defects in Beijing, which may help in policy-making regarding the prevention and intervention of birth defects.
authors.affiliation: Haidian Maternal and Child Health Hospital, Beijing 100080, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
authors.forename: Xiao-hong
authors.initials: XH
authors.lastname: Liu
authors.forename: Fen-yan
authors.initials: FY
authors.lastname: Wang
authors.forename: Xin-liang
authors.initials: XL
authors.lastname: Zhao
authors.forename: Xi
authors.initials: X
authors.lastname: Zhang
authors.forename: Yun-ping
authors.initials: YP
authors.lastname: Zhang
mesh_terms: D002681:China / Q000453:epidemiology; D000013:Congenital Abnormalities / Q000453:epidemiology*; D004431:Ear, External / Q000002:abnormalities*; D005260:Female; D005385:Fingers / Q000002:abnormalities; D006330:Heart Defects, Congenital / Q000453:epidemiology*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D017689:Polydactyly / Q000453:epidemiology; D015995:Prevalence