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Current study examines the decrease in intellectual disability in autism across age groups, highlighting a significant trend.
• The proportion of intellectual disability in autism has been decreasing over the past few decades. • Current study examined the proportion of intellectual disability in autism across two decades and in different age groups. • The proportion of intellectual disability in autism decreased substantially over two decades (from 55.8% in 2001 to 6.7 in 2020). • The prevalence of registered autism increased with approximately 800% during the same period.
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Salkić et al. (2026) studied this question.
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