NCHS releases public use
data sets from the continuous NHANES in two year groupings (cycles). This
release does not contain all of the data collected on persons who
participated in the survey during those two years (9,965 persons).
As more data becomes available it will be released on this webpage. These
updates will be documented on this site. Data processing, methodologic and
disclosure concerns are examples of the reasons why various data
components from NHANES 1999-2000 are not on this first public use data
release. When (and if) these concerns are resolved, the data will be made
publicly available.
For a number of reasons,
the release of data from the current NHANES will not be comparable to the
approach used in previous NHANES studies. The data and documentation for
the interview, laboratory and examination components of the survey will be
released in numerous files to facilitate ease of use and access via the
Internet. This will require the user to merge files to create analytic
data sets. In addition, changes in the survey design and implementation
necessitate analytic guidelines that differ from previous NHANES. Many of
the past general analytic principles still apply, but with adjustments for
the new survey design and taking into account more recent statistical
practices and procedures. The guidelines will be revised on various
occasions as new issues are raised and addressed by NCHS staff. Users are
encouraged to regularly check this site for updates on available data,
documentation and guidelines for use of the data.
NHANES data in this
release are in SAS transport file format.To
access this data in any version of SAS, use the XPORT engine.It
is recommended that you copy the transport files to a permanent SAS
library.For example, assuming
you have downloaded the Body Measures exam data to the folder "C:\NHANES",
you can use the following SAS code to copy the Body Measures Exam Data:
LIBNAME
XP XPORT "C:\NHANES\BMX.XPT";
PROC COPY IN=XP OUT=SASUSER;
RUN;
NHANES documentation
and codebooks are in Adobe Acrobat PDF. If you do not have a current
version of Acrobat Reader, a free copy may be obtained from the Adobe
web site.
Demographics
File (NOTE: Clicking on the hyperlinks below will ftp
self-extracting zip files. The zip files include the SAS transport file,
codebook and documentation listed after each hyperlink.)
Examination
Files(NOTE: Clicking on the hyperlinks below will ftp
self-extracting zip files. The zip files include the SAS transport
file, codebook and documentation listed after each hyperlink. You
can also download the codebook, documentation, frequencies or dataset for
a particular examination component independently. The independent
files are not zip files.)
Laboratory
Files (NOTE: Clicking on the hyperlinks below will ftp
self-extracting zip files. The zip files include the SAS transport
file, codebook and documentation listed after each hyperlink. You
can also download the codebook, documentation, frequencies or dataset for
a particular examination component independently. The independent
files are not zip files.)
Questionnaire
Files (NOTE: Clicking on the hyperlinks below will ftp
self-extracting zip files. The zip files include the SAS transport
file, codebook and documentation listed after each hyperlink. You
can also download the codebook, documentation, frequencies or dataset for
a particular examination component independently. The independent
files are not zip files.)
Documentation
