Monday, January 09, 2012
Racial differences in autism
Dr. Charlton asked about data concerning racial differences in autism. I merged the four National Health Interview Surveys from the past decade (sample size = 43,774) which yielded 193 autistic kids. The rate for whites is 4.5 per 1,000. It's 4.1 per 1,000 for blacks. I don't see much of a difference here.
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I feel like there is more to this lurking in the details.
ReplyDeleteThanks to both Inductivist and Jason.
ReplyDeleteI would be almost sure that (on evolutionary grounds) there would be very little Asperger's among Sub-Saharan Africans; so I tend to believe the anecdotal data from Jason rather than the study which Ron unearthed (well done!)
I am surprised.
ReplyDeleteIf anyone needs a laugh, check out the anecdotal hogwash throughout the comments section of the "Myth of the Black Aspergian" link. I feel like 'unamused' or 'paul kersey' would destroy the commenters.
ReplyDeleteThere's a followup article here, which doesn't really offer any more convincing evidence. To be quite honest, I would think the discrepancy between diagnosis rates and turning up to autism/aspergers gatherings is better explained as a result of cultural differences in how people see themselves than anything else. You'd be most likely to meet black people with Aspergers or ASD at a 'black aspergers' themed convention, which probably couldn't get critical mass enough to get going. White people just don't identify enough with their ethnic group to self-segregate into insignificant invisible groups in the same manner.
ReplyDeleteRacial Disparities in Community Identification of Autism Spectrum Disorders Over Time; Metropolitan Atlanta, Georgia, 2000–2006
ReplyDelete"Total ASD prevalence was higher for NHW (Non-Hispanic White) than NHB (Non-Hispanic Black) children, but NHB children were more likely than NHW children to have autistic disorder and autism eligibility at a public school documented in records. NHB children were less likely than NHW children to have pervasive developmental disorder-not otherwise specified and Asperger's disorder documented in records, even after controlling for socioeconomic status. NHB children were more likely than NHW children to have co-occurring intellectual disability."
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"Childhood Autism in Africa" (1978)
"A further possibility is that certain specific aspects of the syndrome occur less frequently in the African populations"
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Autism, Intellectual Disabilities Related to Parental Age, Education and Ethnicity, Not Income, Utah Study Finds
"They evaluated a variety of demographic factors and found that children with ASD but not ID were significantly more likely to be male and to have mothers of white, non-Hispanic ethnicity."
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At 51:46 of this Google talk James Watson is asked about autism and race.
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