National Health Interview Survey Linked Mortality Files
In 2004, NCHS conducted an updated linkage of the National Health Interview Survey (NHIS) to death certificate data found in the National Death Index (NDI). Linkage of the NHIS survey participants with the NDI provides the opportunity to conduct studies designed to investigate the association of a variety of health factors with mortality, using the richness of the NHIS questionnaires. NCHS has created two versions of the new NHIS Linked Mortality Files: public-use files that include a limited set of mortality variables and restricted-use files that include more detailed mortality information. NCHS recommends that researchers use these new linked mortality files as they supersede all prior data releases of the NHIS Linked Mortality Files.
Both the public-use and restricted-use NHIS Linked Mortality Files include the NHIS survey years 1986 to 2000 with mortality follow-up through December 31, 2002. Mortality information is based upon the results from a probabilistic match between NHIS and NDI death certificate records. All NHIS participants are included on the linked mortality files, but only adult participants (those 18 years and older) were eligible for mortality follow-up. Each NHIS survey year (1986-2000) is available on a separate data file, with a consistent file format for all years.
Tabular Data PDF 143 KB
Data Linkage Team
This page last reviewed
July 16, 2008