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Table 3 Mortality Ascertainment among Millennium Cohort Study Participants by Mortality Data Source, July 1, 2001-December 31, 2004

From: Early mortality experience in a large military cohort and a comparison of mortality data sources

Mortality Data Source Deceaseda
(n= 202)
Proportion of Total Deceased (%)
Department of Defense Medical Mortality Registryb 94 46.5
National Center for Health Statistics National Death Indexc 164 81.2
Social Security Administration Death Master Filed 173 85.6
Department of Veterans Affairs Mortality Data Filese 196 97.0
  1. a Participants who enrolled in the study between July 1, 2001, and June 30, 2003, were counted among the deceased if two of the following personal identifiers were an exact match between Millennium Cohort and mortality data sources: Social Security number, last and first name, date of birth. Deceased counts are not mutually exclusive.
  2. b Data received from the Armed Force Institute of Pathology.
  3. c Data request received by National Death Index on November 9, 2006, for death ascertainment through December 31, 2004.
  4. d Data obtained from the Defense Manpower Data Center.
  5. e Includes mortality data from the Beneficiary Identification and Records Locator Subsystem Death File, the Medical SAS Inpatient Datasets, formerly known as the Patient Treatment Files, and the Social Security Administration Death Master File.