National Health and Nutrition Examination Survey

The current National Health and Nutrition Examination Survey (NHANES) is a continuous program starting in 1999. The survey interviews and examines a nationally representative sample of five,000 persons every year. These persons are located in counties across the country, 15 of that are visited each year. No geographic location was released in order to shield the identification of respondents for the NHANES survey. State and county info might be obtained through the Research Information Center (RDC). It is desirable, however, to use a finer level of geography to spatially analyze the NHANES information and to answer numerous important analysis queries about the impact of geography on health. Therefore, NCHS has asked HUD to geocode (i.e., assign geographic codes to) the NHANES survey knowledge for analytical use within the RDC every 2 year cycle.

HUD geocoded the 2009-2010 NHANES survey data to the 2000 census.
Specifically, HUD provided:

one. Census block cluster, census tract, county, state, and all other census codes normally provided by the HUD Geocoding Service Center for each residential address.
a pair of. Latitude and longitude for each residential address.