Thursday, February 10, 2011

Recent autism prevalence studies point to variability in methodologyand bias

In Prevalence of autism spectrum disorders and influence of country of measurement and ethnicity , the authors look atASD prevalence by country and ethnicity. They hypothesize that “methodological factors, socioeconomic variables, and bias” play a role in the variability in autism prevalence. The disparities by geography and by ethnicity within the data reported within the U.S. has been a big concern of mine for some time. Clearly there is not an obvious difference between, say, New Jersey (with an estimated prevalence of 10.6/1,000) and Alabama (with an estimated prevalence of 6/1,000) to account for the large difference in estimated prevalence.

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