NCHS Data Linkage

NCHS Data Linked to NDI Mortality Files

NCHS has linked data from various surveys with death certificate records from the National Death Index (NDI). Linkage of the NCHS survey participant data with the NDI mortality data provides the opportunity to conduct a vast array of outcome studies designed to investigate the association of a wide variety of health factors with mortality. The Linked Mortality Files (LMF) have been updated with mortality follow-up data through December 31, 2019.

NCHS Surveys Linked to NDI Mortality Data

  • National Health Interview Survey (NHIS): 1986 – 2018
  • National Health and Nutrition Examination Surveys (NHANES): 1999-2018
  • Third National Health and Nutrition Examination Survey (NHANES III)
  • NHANES I Epidemiologic Follow-up Study (NHEFS)
  • National Nursing Home Surveys (NNHS): 1985, 1995, 1997, 2004
  • The Second Longitudinal Study of Aging (LSOA II)

Linked Mortality Data Bibliography


The details of the linked data, linkage methods, and analysis considerations, are available from the links on the navigation menu. For any additional questions, contact the Data Linkage Team:

Data Linkage Team
Division of Analysis and Epidemiology
National Center for Health Statistics
Centers for Disease Control and Prevention
3311 Toledo Road
Hyattsville, MD 20782