NHANES II Linked Mortality File

 

Description of the NHANES II Linked Mortality File

NCHS has updated the mortality linkage of the Second National Health and Nutrition Examination Survey (NHANES II) to death certificate data found in the National Death Index (NDI). The updated NHANES II Linked Mortality File provides mortality follow-up data through December 31, 2006 for the 9,252 NHANES II participants who were 30-75 years of age and completed a medical examination during the survey period (1976-1980). Mortality ascertainment is based primarily upon the results from a probabilistic match between NHANES II and NDI death certificate records. Linkage of NHANES II survey participants with the NDI provides the opportunity to conduct studies designed to investigate the association of a variety of health factors with mortality. NCHS recommends that researchers use the new linked mortality file as it supersedes the prior data releases of the NHANES II Linked Mortality File.

There are two versions of the NHANES II Linked Mortality File: a public-use file that includes a limited set of mortality variables for NHANES II participants and a restricted-use file that includes more detailed mortality information.

 

Data Files

• Public-use Data (Public-use file coming soon)
• Restricted-use Data (Updated linkage – mortality data through 2006)

 

Methods

• NDI Record Matching Process for NCHS surveys [PDF - 43 KB]
• Calibration Study [PDF – 26KB]
• Mortality Linkage Eligibility [PDF – 18 KB]
• Mortality Linkage Methodology [PDF – 98KB]

 

Analytic Support

• Analytic Guidelines [PDF – 29KB]
• Comparability of Public-use and Restricted-use Data Files
• Comparability of Cause of Death Between ICD-9 and ICD-10: Preliminary Estimates [PDF - 338 KB]
• NHANES II Linked Mortality Files Citation List [PDF - 34 KB]KB]

 

Contacts

Data Linkage Team
Office of Analysis and Epidemiology
National Center for Health Statistics
Centers for Disease Control and Prevention
3311 Toledo Road, Room 6435
Hyattsville, MD 20782
E-mail: datalinkage@cdc.gov