A common method
is used at each ADDM site. Health and education records
are requested from medical providers and public schools that
conduct developmental evaluations of children. Specifically,
records are requested by sites for children who meet the age
and residency eligibility criteria and who have an indication
of ASD or another developmental concern based on discharge
or other diagnostic codes in health records and special
education eligibility codes in education records. The selected
records are screened, and those with one or more predefined