title: Risk of cerebral palsy in Chinese children: A N:M matched case control study.
abstract: OBJECTIVE
  To estimate epidemiological risk factors for cerebral palsy (CP) in children.
  
  
  METHODS
  A N:M matched case control study was conducted in 114 persons with CP and 1286 controls. Relevant data were collected using a maternal self-design questionnaire. Univariate logistic regression and multivariate conditional logistic regression analyses were performed using SPSS.
  
  
  RESULTS
  Univariate analysis has yielded 20 significant risk factors for CP. Advanced maternal age (30 years or older) at childbirth (adjusted odds ratio (OR) 1.63, 95% confidence interval (CI) 0.98-2.72), alcohol consumption during pregnancy (adjusted OR 4.17, 95% CI 1.23-14.08), living in the countryside (adjusted OR 1.71, 95% CI 1.18-2.48), father's occupational exposure to harmful substances (adjusted OR 3.34, 95% CI 1.61-6.93) and multiple births (adjusted OR 3.10, 95% CI 1.65-5.84) were found to be risk factors for CP by multivariate analysis. On the other side, high mother's education level (adjusted OR 0.60, 95% CI 0.46-0.76), folic acid supplements (adjusted OR 0.50, 95% CI 0.30-0.82), and high birth hospital level (adjusted OR 0.68, 95% CI 0.52-0.90) were found to be protective factors.
  
  
  CONCLUSIONS
  Although the important risk factors of CP focus on gestation at birth and perinatal events, the incidence could probably be further lowered, if potential risk factors identified in this study are considered.
authors.affiliation: Children Rehabilitation Center of Huaian Maternity and Child Care Hospital, Huaian, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Gao
authors.affiliation: Children Rehabilitation Center of Huaian Maternity and Child Care Hospital, Huaian, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Zhao
authors.affiliation: Children Rehabilitation Center of Huaian Maternity and Child Care Hospital, Huaian, China.
authors.forename: Luna
authors.initials: L
authors.lastname: He
authors.affiliation: Children Rehabilitation Center of Huaian Maternity and Child Care Hospital, Huaian, China.
authors.forename: Meiling
authors.initials: M
authors.lastname: Sun
authors.affiliation: The Fourth Affiliated Hospital of Nanchang University, Nanjing, China.
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Yu
authors.affiliation: Key Laboratory of Environmental Medicine Engineering, Department of Epidemiology and Biostatistics, School of Public Health, Southeast University, Nanjing, China.
authors.forename: Lina
authors.initials: L
authors.lastname: Wang
mesh_terms: D016022:Case-Control Studies; D002547:Cerebral Palsy / Q000453:epidemiology / Q000209:etiology*; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D007223:Infant; D016015:Logistic Models; D008297:Male; D015999:Multivariate Analysis; D016017:Odds Ratio; D012307:Risk Factors
keywords: case control study; cerebral palsy; risk factors