Data Services

CDHA can assist researchers to create, document, and distribute public use microdata for secondary analysis. Non-sensitive public use data archived with CDHA are currently published to the BADGIR site, Assistance in developing customized security and confidentiality protocols for IRB review or Certificates of Confidentiality is available as is assistance in obtaining a license for restricted data traditionally housed at other institutions including the other NIA demography centers. To learn more about the process of applying to use restricted data, please see this Restricted Data at DISC page.


Better Access to Data for Global Interdisciplinary Research (BADGIR) is an on-line data archive at the University of Wisconsin - Madison. The archive is a cooperative venture organized by the Center for Demography of Health and Aging (CDHA) with contributions from the Center for Demography and Ecology (CDE) and the Data and Information Services Center (DISC). Computing services are provided by the Social Science Computing Cooperative (SSCC). From this portal you can browse or search data documentation (e.g., metadata, codebooks) and univariate summary statistics (e.g., mean, frequency counts). Registered users can also create cross-tabulations that can be downloaded in MS Excel format, and perform regression analyses (registration required). Registered users who are interested in performing more sophisticated multivariate analyses can create and download customized data sets that can be imported into a variety of statistical packages (e.g., SPSS, SAS, STATA).

To register, you will need a working email address. You will be asked to select a password and to review and submit a completed data user agreement. It takes one to two business days for CDHA staff to set up a BADGIR account after a registration is received. You do not need to register if you are interested only in reviewing research reports or other related publications rather than analyzing the data yourself.

Wisconsin Research Data Center (WiscRDC)

Wisconsin Research Data Center, opened in September 2015. WiscRDC is a branch of the U.S. Census Bureau's Federal Statistical Research Data Center (FSRDC) network. It is a secure facility that provide qualified researchers access to restricted-use microdata collected by the Census Bureau and other agencies such as the National Center for Health Statistics and the Agency for Healthcare Research and Quality.

Data Sources

This resource page is designed to aid researchers in aging find cross-sectional studies, time series, contextual data, and other data relevant to their research. Biodemography is the integration of demographic and biological theory and methods. It provides an innovative way to study the impact of aging on health and longevity. A website featuring biodemographic projects and publications at UW-Madison is available at