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National Health Interview Survey State Data Files The National Health Interview Survey (NHIS) State Data files have been constructed to allow for the production of direct State estimates. These files differ from the NHIS public-use data in that statistical noise at both the variable level and record level have been added to allow for the protection of respondent confidentiality and, at the same time, allow for release of the files with State identifiers. States where the sample size is too small have been combined into groups. The NHIS State data files are only available in SAS version 6.06 format. A format library is provided to give the code structure for all variables. Instructions for using the files and limitations of the files are included in the readme files on each CD-ROM. Additional files included on the CD-ROM include several example SAS programs demonstrating linkage to external ecologic data files and the use of sampling weights. Complete NHIS survey documentation and file contents are on the NHIS public-use CD-ROMs and are not reproduced on the State data file CD-ROMs. Ordering information
This page last reviewed January 11, 2007
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