Spatial Dataset used to display Census Tracts for the year 2011-2015 in Mecklenburg County, North Carolina. This dataset includes attributes such as census tracts and block groups.The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation.

On the U.S. Census Block Group level, the data for Poverty and Race and Ethnicity were overlaid on the map of North Carolina. If the NC DEQ definition of Underserved Communities was met (meaning the following criteria was present in the block group), the block group was selected. This criteria for the block group was compared to both the County and the State. It is selected as a potentially underserved block group if it meets the following criteria for Race/Ethnicity and Poverty: Racial/Ethnic composition: Share of nonwhites and Hispanic or Latino (of any race) is over fifty percent OR Share of nonwhites and Hispanic or Latino (of any race) is at least ten percent higher than County or State share. AND Poverty rate: Share of population experiencing poverty is over twenty percent AND Share of households in poverty is at least five percent higher than the County or State share.

aSES indicator is % above poverty level based on United States Census 2000 block group data.bCI = Confidence Interval.cPoverty areas include United States Census 2000 block groups in which more than 20% of families with children have incomes below the poverty level [38]. Percent of cases living in poverty is 20.4% in sites accessing only data from healthcare sources.dIn addition to the χ2 test of the SES gradient within the stratum of children with no pre-existing ASD diagnosis, a separate χ2 test of the difference in the SES gradient for children with and without a pre-existing ASD diagnosis also resulted in a p-value <0.0001.eRestricted to sites with access to school records (n = 2713), including those in Arkansas, Arizona, Colorado, Georgia, Maryland, North Carolina, New Jersey, South Carolina.