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Table 1 Distribution of Mortality by Demographic and Military Characteristics Comparing Panel 1 Participants and Non-Participants for the Millennium Cohort Study, United States, July 1, 2001-December 31, 2006

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

Baseline Characteristics Panel 1 Participantsa Panel 1 Non-Participantsb
  Total Sample
n = 76,960
%d
Deceasedc
n = 341
%d
Total Sample
n = 132,186
%d
Deceasedc
n = 820
%d
Gender     
   Male 73.2 80.1 78.0 88.5
   Female 26.8 19.9 22.0 11.5
Birth year     
   Pre-1960 21.6 43.1 13.2 27.3
   1960-1969 37.9 30.8 29.3 22.9
   1970-1979 34.6 21.1 46.7 39.3
   1980 or later 5.9 5.0 10.9 10.5
Race/ethnicity     
   White non-Hispanic 69.6 74.8 63.9 65.0
   Black non-Hispanic 13.8 11.4 20.9 20.2
   Other 16.6 13.8 15.2 14.8
Marital status     
   Not married 30.1 26.1 43.1 42.2
   Married 63.1 65.4 51.3 49.6
   Divorced 6.9 8.5 5.7 8.2
Education     
   High school or less 48.9 49.3 61.0 66.0
   Some college 25.5 25.8 24.6 19.9
   Bachelor's degree 16.5 17.3 10.1 10.1
   Advanced degree 9.1 7.6 4.3 4.0
Service component     
   Reserve/National Guard 43.1 57.2 43.4 47.3
   Active duty 56.9 42.8 56.6 52.7
Branch of service     
   Army 47.4 50.7 43.5 51.8
   Air Force 29.1 29.9 29.8 22.4
   Navy/Coast Guard 18.5 14.7 19.9 18.4
   Marine Corps 5.1 4.7 6.8 7.3
Military pay grade     
   Enlisted 77.0 76.8 87.8 88.7
   Officer 23.0 23.2 12.2 11.3
Occupational category     
   Combat specialists 20.0 26.1 21.3 27.7
   Health care specialists 10.4 9.1 7.6 6.3
   Service supply and functional support 28.7 27.6 26.6 23.4
   Other 40.9 37.2 44.5 42.6
Deployment experiencee     
   Pre-2001 18.9 22.3 18.3 23.2
   2001-2006 21.7 16.4 21.5 13.5
   Pre-2001 and 2001-2006 18.6 11.4 16.3 11.5
   None 40.8 49.9 43.9 51.8
Separated from military servicef     
   No 76.5 84.5 73.8 83.2
   Yes 23.5 15.5 26.2 16.8
  1. a Includes Panel 1 Millennium Cohort participants who enrolled in the study between July 1, 2001, and June 30, 2003, and had complete demographic data.
  2. b Includes service members who had complete demographic data, were presumed alive as of June 30, 2001, were able to be contacted by mail and were invited to enroll in the first panel of the Millennium Cohort Study, but either declined, did not respond, or were ineligible.
  3. c Data sources include Armed Forces Institute of Pathology, Department of Veterans Affairs, and Defense Manpower Data Center.
  4. d Percents may not sum to 100 due to rounding.
  5. e Deployment category "Pre-2001" refers to individuals deployed to the 1991 Gulf War or to Bosnia, Kosovo, or Southwest Asia between January 1, 1998, and September 30, 2000; the category "2001-2006" includes individuals deployed in support of the military operations in Iraq and Afghanistan between September 1, 2001, and December 31, 2006.
  6. f Separation (retirement or early separation) from military service as of December 31, 2006 (excludes death as a reason for separation).