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2004 JUL 1 - (NewsRx.com & NewsRx.net) -- Mothers of children diagnosed with autism are more likely to be older and to have experienced obstetric difficulties during pregnancy, labor, and delivery, but these complications are likely related to underlying genetic factors, psychiatrists report.
Autism is believed to have a genetic basis, although some studies suggest that prenatal factors may play a role in this developmental disorder characterized by severely impaired social functioning and communication. Autism has a prevalence of about 10 to 20 per 10,000 individuals, and is usually diagnosed between the ages of 3 to 4 years, when certain developmental milestones are not met.
Emma J. Glasson, BPsych, BSc (Hons), PhD, of the University of Western Australia, Crawley, and colleagues examined the association between obstetric factors during pregnancy and birth, and autism spectrum disorders. They studied obstetric information in the Maternal and Child Health Research Database of Western Australia for mothers who gave birth between 1980 and 1995, and whose children were diagnosed with autism spectrum disorders by 1999.
For their study, published in the June 2004 Archives of General Psychiatry, the authors reviewed the medical information for children diagnosed with autism (n=465), siblings of children with autism disorders (n=481), and a random, population-based control group ...
Source: HighBeam Research, Maternal age and complications in pregnancy or birth may be risk...