Antenatal ultrasound and risk of autism spectrum disorders

Antenatal ultrasound and risk of autism spectrum disorders

http://www.ncbi.nlm.nih.gov/pubmed/19728066

In this study, two groups — one with ASD and one without — are studied for possible links between number of ultrasound scans and developmental disorders. No connection is found.

Problem: The article relies on the number of scans to represent dose. This is a fallacy. As mentioned in a previous post, 5 scans for 5 minutes each and 1 scan for an hour are dramatically different in duration alone. There are many other variables involved.

I conclude that this paper does not confidently prove that antenatal ultrasound is not a possible trigger of autism, and the search continues . . .

We need more research.

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