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According to the CDC's Autism and Developmental Disabilities Monitoring Network, an estimated 1 in 59 children in the United States is diagnosed with autism spectrum disorder. The disorder shows a significant gender disparity, being four times more prevalent in boys (1 in 38) compared to girls (1 in 152).

Prevalence of Autism Spectrum Disorder

The reported rates of autism spectrum disorder have risen sharply since the 1980s. For instance, California experienced a 273% surge in cases between 1987 and 1998, and the entire United States saw a 78% increase in diagnoses from 2000 to 2008.

Increase in Autism Spectrum Disorder Prevalence

A public health researcher is reviewing data from a large, representative sample of school-aged children, which includes 1,520 boys and 1,520 girls. Based on established prevalence estimates for autism spectrum disorder, which of the following outcomes is the researcher most likely to find?

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