- Linkage Documentation
NCHS has developed a record linkage program designed to maximize the scientific value of the Center’s population-based surveys. Linked data files enable researchers to examine the factors that influence disability, chronic disease, health care utilization, morbidity, and mortality. This is the data linkage homepage.
- CMSexternal icon
This link can be used to find information about the Centers for Medicare & Medicaid (CMS) programs. This is the CMS homepage.
- Data Request Process, Research Data Center
The National Center for Health Statistics (NCHS) developed the Research Data Centers (RDC) to allow researchers access to restricted data. This is the RDC homepage.
- ResDACexternal icon
The Research Data Assistance Center (ResDAC) is a CMS contractor that provides free assistance to academic, government and non-profit researchers interested in using Medicare and/or Medicaid data for their research. This is the ResDAC homepage.
To report problems or comments, use the NHANES Web Tutorial email. Do not direct questions to this email address, as it can only receive feedback and we will not be able to reply.