Researchers said that the gaps in autism diagnosis, which were seen in children born from 1992 to 1995 when wealthier children had a 20% to 40% higher chance of being diagnosed than poorer counterparts, no longer exist for children born in 2000. They reported in the American Sociological Review that neighborhood played a greater role than family wealth, with children born to poor families but living in more affluent neighborhoods having a 250% higher chance of being diagnosed compared with counterparts in poorer neighborhoods.

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