Why are no data files listed for certain data collections?
If you find a data collection that you would like to download, but you are only given the option to download the documentation and no data, then you should read the README or Abstract files for more information about how to obtain the data. In order to ensure respondent confidentiality, certain sensitive data collections are available only through a restricted access archive. While these data are still available free of charge, users must specifically request these collections from the archive. More information about this process and the necessary Data Transfer Agreement Form can be found in our Restricted Use Archive.