Additional Resources

  • 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.
  • CMS
    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.
  • ResDAC
    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.


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