Linkage Methods and Analytical Support for NCHS Linked Mortality Data

• 2011 NDI Records Matching Process Flow Chart for NCHS Surveys[PDF - 339 KB]

  Illustrates the NCHS survey submission records and NDI match selection process for the 2011 NCHS Linked Mortality Files.

• National Center for Health Statistics. Office of Analysis and Epidemiology, NCHS 2011 Linked Mortality Files Matching Methodology, September, 2013. Hyattsville, Maryland.[PDF - 53 KB]

  Describes the matching methodology used to produce the 2011 NCHS Linked Mortality Files. Mortality status for NCHS survey participant is ascertained primarily through probabilistic record matching with the NDI.

• National Center for Health Statistics. Office of Analysis and Epidemiology. Analytic Guidelines for NCHS 2011 Linked Mortality Files, August, 2013. Hyattsville, Maryland.[PDF - 35 KB]

  Addresses analytic issues such as: linkage eligibility status; use of survey weights; eligibility adjusted weights; pooled analysis of NCHS linked mortality files; inconsistencies in baseline age and follow-up age; source of mortality data; match result variables; oversampling; and other statistical issues relevant to survey data.

Additional Resources:

• Anderson RN, Miniño AM, Hoyert DL, Rosenberg HM. Comparability of cause of death between ICD–9 and ICD–10: Preliminary estimates. National vital statistics reports; vol 49 no. 2. Hyattsville, Maryland: National Center for Health Statistics. 2001.[PDF - 450 KB]
• National Death Index (NDI) webpage