title: [A Meta-analysis on the risk factors of perinatal congenital heart disease in Chinese people].
abstract: OBJECTIVE
  To investigate the main risk factors related to the incidence of perinatal congenital heart disease (CHD) in Chinese people.
  
  
  METHODS
  Results on the risk factors of CHD in 12 papers were analyzed by Meta-analysis method. The cumulative cases and controls were 3436 and 3976, respectively. The calculation methods of the combined odds ratio (OR) and 95% confidence interval (CI) were determined according to the homogeneity test.
  
  
  RESULTS
  The pooled OR values of single-factor-analysis were as follows: spiritual stimulus (4.55), maternal exposures to pesticides (4.85), negative life events (5.39) during pregnancy, cold (3.18) during early pregnancy, exposure to chemical toxic substances before pregnancy. The pooled OR values of multiple-factor analysis were as follows: spiritual stimulus (4.08), exposure to chemical toxic substances (3.54), cold with fever (5.00) during pregnancy.
  
  
  CONCLUSIONS
  The main factors influencing the incidence of CHD in Chinese people were current spiritual stimulus, exposure to chemical toxic substances or pesticides, negative life events during pregnancy, cold or fever during early pregnancy, exposure to chemical toxic substances before pregnancy.
authors.affiliation: Department of Pediatrics, Nanjing Maternal and Child Health Hospital Affiliated to Nanjing Medical University, Nanjing 210004, China.
authors.forename: Zhang-bin
authors.initials: ZB
authors.lastname: Yu
authors.forename: Shu-ping
authors.initials: SP
authors.lastname: Han
authors.forename: Xi-rong
authors.initials: XR
authors.lastname: Guo
mesh_terms: D002681:China / Q000453:epidemiology; D005260:Female; D006330:Heart Defects, Congenital / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D018811:Maternal Exposure / Q000706:statistics & numerical data*; D016017:Odds Ratio; D011247:Pregnancy; D018570:Risk Assessment; D012307:Risk Factors