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Data Access

NHIS Linked Mortality Restricted-use Files

 

Data File Description

The updated NHIS Linked Mortality Restricted-use Files provide mortality follow-up data for the NHIS years 1986-2004 from the date of interview through December 31, 2006. Mortality ascertainment is based primarily upon the results from a probabilistic match between NHIS and NDI death certificate records. Each NHIS survey year (1986-2004) is available on a separate data file. Additional death certificate data are available by special request [PDF - 125 KB]. The NHIS Linked Mortality Restricted-use data files do not contain perturbed data.

 

Data Availability

Due to confidentiality requirements, the NHIS Linked Mortality Restricted-use data are accessible only through the NCHS Research Data Center (RDC). Approved researchers will be able to analyze data from the NHIS Restricted-use Linked Mortality Files in the RDC. All interested researchers must submit a research proposal to the RDC requesting to access the "2009 NHIS Restricted-use LMF". Special request variables [PDF - 125 KB], available separately, must be requested specifically, with additional justification, in the RDC proposal. Researchers will not be allowed to access variables from the NHIS Public-use Linked Mortality Files in the RDC.

 

List of Variables at a Glance

  • NHIS Public-use ID
  • Eligibility status
  • Final mortality status
  • Date of death
  • Age at death
  • Age when last presumed alive
  • Underlying cause of death codes (ICD-9 and ICD-10)
  • Underlying cause of death recodes (ICD-9 and ICD-10)
  • Multiple cause of death entity axis codes
  • Multiple cause of death record axis codes
  • Adjusted sample weights
  • Date of birth
  • Date of NHIS interview
  • Age at NHIS interview

 

Data File Technical Characteristics

The NHIS Linked Mortality Restricted-use Data Files are available in SAS formats. The following list provides the number of file records per survey.

  • NHIS 1986 62,052
  • NHIS 1987 122,859
  • NHIS 1988 122,310
  • NHIS 1989 116,929
  • NHIS 1990 119,631
  • NHIS 1991 120,032
  • NHIS 1992 128,412
  • NHIS 1993 109,671
  • NHIS 1994 116,179
  • NHIS 1995 102,467
  • NHIS 1996 63,402
  • NHIS 1997 103,477
  • NHIS 1998 98,785
  • NHIS 1999 97,059
  • NHIS 2000 100,618
  • NHIS 2001 100,761
  • NHIS 2002 93,386
  • NHIS 2003 92,148
  • NHIS 2004 94,460

 

List of Data File Variables Available by Special Request

 

Documentation Contents

 

 
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