Public NCHS Data

You may have a health or medical research topic in mind and need to see how it was implemented in the different surveys. Or you may have picked a data system but need more information about the datasets, survey cycles, or data years. Review the  “Questionnaires, Datasets, and Related Documentation” or a similar page for each data system here: Data Access – Public-Use Data Files and Documentation (

 Major NCHS Data Systems

  • National Health and Nutrition Examination Survey (NHANES)
  • National Health Care Surveys (NHCS)
  • National Health Interview Survey (NHIS)
  • Vital Statistics System (NVSS)

Other NCHS Data Sources

  • Longitudinal Studies of Aging (LSOA)
  • NCHS Data Linkage Activities (Linkage)
  • National Immunization Survey (NIS)
  • National Survey of Family Growth (NSFG)
  • State and Local Area Integrated Telephone Survey (SLAITS)