We utilize age, race, sex, Hispanic origin (ARSH) information, housing tenure counts (i.e., owning, renting), and urban/rural population counts from the most recent decennial census "short form", asked of every person and at every housing unit in the United States. Starting with 2010 SAHIE, we use Census 2010 data. For 2009 SAHIE and prior, we used Census 2000 data.
The term census "long form" refers to the expanded set of questions that was asked of a sample of the total population (about 1 in 6), most recently as part of Census 2000. In contrast, current data on the traditional census long-form subjects are available annually from the American Community Survey (ACS). As a result, starting with 2010 SAHIE, the following three SAHIE predictors are now created from five-year ACS: educational-attainment estimates, citizenship-status estimates, income-to-poverty ratio (IPR) estimates. For 2009 SAHIE and prior, these three predictors were created from the Census 2000 long-form sample. See the bottom of Data Inputs: American Community Survey for more information.
Note Census 2000 did not contain information about health insurance coverage. The first five-year ACS estimates of health insurance coverage are expected to be released in December 2013.