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Prenatal and perinatal risk factors for autism in China

Xin Zhang1, Cong-Chao Lv, Jiang Tian

  • 1School of Public Health, Tianjin Medical University, Tianjin 300070, China.

Journal of Autism and Developmental Disorders
|April 2, 2010
PubMed

Insights

This study identified key prenatal and perinatal risk factors for autism in Chinese children. Factors like maternal smoking, emotional state, and gestational complications are significantly associated with autism development.

Area of Science:

  • Pediatric Neurology
  • Developmental Psychology
  • Public Health

Background:

  • Autism Spectrum Disorder (ASD) is a complex neurodevelopmental condition.
  • Identifying early risk factors is crucial for timely intervention and prevention strategies.
  • Limited research exists on specific prenatal and perinatal risk factors in the Han Chinese population.

Purpose of the Study:

  • To investigate prenatal and perinatal risk factors associated with autism in Han Chinese children.
  • To identify specific environmental and maternal health factors contributing to autism risk.

Main Methods:

  • A case-control study was conducted with 190 Han children in Tianjin, China.
  • Cases (children with autism) were recruited from special education schools, and controls from regular public schools.
  • Frequency matching on sex and birth year was employed, with adjusted analyses performed to identify significant risk factors.

Main Results:

  • Unadjusted analyses revealed seven prenatal and seven perinatal risk factors.
  • Adjusted analyses identified nine significant risk factors: maternal second-hand smoke exposure, maternal medical conditions, maternal unhappy emotional state, gestational complications, edema, abnormal gestational age, nuchal cord, gravidity >1, and advanced paternal age.

Conclusions:

  • Several prenatal and perinatal factors are significantly associated with autism in Han Chinese children.
  • Maternal health, emotional state, and pregnancy complications are key areas of concern.
  • These findings can inform targeted screening and prevention efforts for autism.

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