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 2001-2002 (11,039 persons). As more data
becomes available, there will be additional releases posted on this
webpage. These updates will be fully documented on this site. Data
processing, methodologic and disclosure concerns are examples of the
reasons why various data components from NHANES 2001-2002 are not on this
first public use data release. When (and if) these concerns are resolved,
the data will be made publicly available.
This Internet data release
contains data and documentation for 11,039 persons who participated in the
NHANES survey during 2001 and 2002. The data and documentation for the
survey interview, laboratory and examination components are found in
separate files (see below).
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. This data release will allow for analyses of
data collected in 2001-2002 using 2-year weights, as well as the ability
to combine these data with those collected in 1999-2000 using 4-year
weights. The analytic guidelines will be revised on various occasions as
new issues are raised and addressed by NCHS staff. Users are encouraged to
check this site regularly for updates on available data, documentation and
guidelines for use of the data.
NHANES data in this
release are in SAS transport file format.
Use the XPORT engine to
access this data in any version of SAS.
Copy the transport files
to a permanent SAS library.
As an example, assume you
have downloaded the Body Measures exam data to the folder "C:\NHANES". You
can then use the following SAS code to copy the Body Measures Exam Data:
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, documentation and
frequency tables 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, documentation
and frequency tables 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, documentation
and frequency tables 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, documentation
and frequency tables 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
