You will need NHANES data files to create your analytic dataset, and you will need the documentation for reference as you conduct your analysis. This is the case regardless of the types of dietary data you wish to use in your analysis.
NHANES data are saved in SAS transport files (.XPT). The SAS transport format allows the data files to be extracted on Windows-, UNIX-, or Macintosh-based systems.
The steps for downloading data files and documentation are described in the “How To” section of this task. For the purposes of this tutorial, it is only necessary to download the data files and documentation if you plan to run the sample programs on your own computer..
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