Public-Use NCHS-HUD Feasibility Files

To maximize the use of the restricted-use linked NCHS-HUD files, NCHS has created publicly available NCHS-HUD Feasibility Study data files that can be downloaded directly from this website.

The feasibility files provide a limited set of variables that can be used to determine the maximum available sample size for a given analysis. These files are especially useful to researchers considering whether to initiate a RDC proposal to analyze the restricted-use linked NCHS-HUD files.

Each feasibility file is NCHS survey specific, with a survey year identifier. The following information is included on each feasibility study file:

• NCHS identifier (PUBLICID for NHIS, SEQN for NHANES)
• Survey respondent eligibility status for NCHS-HUD linkage
• Match status to any HUD program
• Match status by HUD program

It is important to note that the feasibility study files do not contain any specific information about timing of HUD housing assistance, or details about the housing structure. Consequently, data users will need to consider external sources to approximate the number of respondents with a specific condition.

For more information about accessing the HUD restricted-use data, please consult the Restricted-Use NCHS-HUD Data page.

Data Dictionary and Data Files

• Data Dictionary: NCHS-HUD Data Dictionary [PDF – 3.5 MB]
• Data files: 
  • 1999-2012 NHIS-HUD feasibility file [TXT - 64 KB]
    This file can be merged with the 1999-2012 NHIS public-use data files using the identifier for NHIS, PUBLICID.
  • 1999-2012 NHANES-HUD feasibility file [TXT - 66 KB]
    This file can be merged with 1999-2012 NHANES public-use data files using the identifier for NHANES, SEQN.
• Software Programs:
  • Sample SAS program [TXT - 5 KB]
  • Sample Stata program [TXT - 5 KB]