Research Data Center

Research Data Center (RDC)

The National Center for Health Statistics (NCHS) operates the Research Data Center (RDC) to allow researchers access to restricted-use data. The RDC is responsible for protecting the confidentiality of survey respondents, study subjects, or institutions while providing access to the restricted-use data for statistical purposes. For access to the restricted-use data, researchers must submit a research proposal outlining the need for restricted-use data. The proposal provides a framework for NCHS to identify potential disclosure risks and how the data will be used.


  1. Preparing for Proposal Submission
    1. Restricted Data
    2. Access Modes
    3. The Proposal Process
  2. Accessing Restricted Data
    1. Confidentiality
    2. Approved Projects: Next Steps
    3. Publishing Guidelines

Data Hosting

The NCHS RDC also hosts restricted-use data for agencies within the Department of Health and Human Services (HHS).  Other federal agencies interested in having NCHS RDC host their data may contact .

Hosted Data

Contact Information:
Research Data Center
3311 Toledo Road 5583
Hyattsville, MD 20782


Page last reviewed: February 5, 2019, 11:45 AM