Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.
ADDM provides reliable, population-based prevalence estimates of the number of school-aged children with developmental disabilities over time and is the only program in the US conducting active surveillance for serious developmental disabilities using data on individual children. ADDM sites with access to both education records and newborn blood-spot screening data will contribute to these data points. Data from newborn bloodspot screening will be used to establish the denominator and these data will be linked to special education data obtained annually by each ADDM site with access to education records.
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