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Table 4 Demographic and Military Characteristics of Millennium Cohort Study Decedents 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

Baseline Characteristic

All Sources

(n= 202)

%b

Department of Defense Medical Mortality Registry

(n= 94)

%b

National Center for Health Statistics National Death Index

(n= 164)

%b

Social Security Administration Death Master File

(n= 173)

%b

Department of Veterans Affairs Mortality Data Files

(n= 196)

%b

Gender

     

   Male

79.7

80.9

76.2

79.8

80.1

   Female

20.3

19.2

23.8

20.2

19.9

Birth year

     

   Pre-1960

43.1

22.3

48.8

48.6

43.9

   1960-1969

28.7

36.2

29.9

29.5

28.6

   1970-1979

21.8

31.9

15.2

17.3

20.9

   1980 or later

6.4

9.6

6.1

4.6

6.6

Race/ethnicity

     

   White non-Hispanic

74.8

69.2

74.4

75.7

75.5

   Black non-Hispanic

10.4

10.6

11.0

9.3

9.7

   Other

14.9

20.2

14.6

15.0

14.8

Marital status

     

   Not married

22.8

29.8

18.9

19.7

23.5

   Married

68.8

67.0

72.0

71.1

67.9

   Divorced

8.4

3.2

9.2

9.3

8.7

Education

     

   High school or less

50.5

48.9

50.0

48.6

51.0

   Some college

24.8

22.3

26.8

25.4

24.0

   Bachelor's degree

15.8

17.0

13.4

16.8

16.3

   Advanced degree

8.9

11.7

9.8

9.3

8.7

Service component

     

   Reserve/National Guard

55.5

31.9

61.0

56.7

56.6

   Active duty

44.6

68.1

39.0

43.4

43.4

Branch of service

     

   Army

48.5

46.8

47.6

47.4

48.5

   Air Force

30.7

24.5

31.7

33.0

30.6

   Navy/Coast Guard

15.8

20.2

18.3

15.6

15.8

   Marine Corps

5.0

8.5

2.4

4.1

5.1

Military pay grade

     

   Enlisted

75.7

73.4

76.8

75.1

76.0

   Officer

24.3

26.6

23.2

24.9

24.0

Occupational category

     

   Combat specialists

22.3

26.6

18.3

21.4

22.5

   Health care specialists

9.4

8.5

11.0

11.0

9.7

   Service supply and functional support

32.2

27.7

37.8

32.4

32.1

   Other

36.1

37.2

32.9

35.3

35.7

Deployment experiencec

     

   Pre-2001

23.3

21.3

26.2

24.9

24.0

   2001-2006

15.4

25.5

7.3

13.9

15.3

   Pre-2001 and 2001-2006

9.4

16.0

5.5

9.8

9.2

   None

52.0

37.2

61.0

51.5

51.5

Separated from military serviced

     

   No

85.6

89.4

82.9

85.6

86.2

   Yes

14.4

10.6

17.1

14.5

13.8

  1. a Includes Millennium Cohort participants who enrolled in the study between July 1, 2001, and June 30, 2003, and had complete demographic data.
  2. b Percents may not sum to 100 due to rounding.
  3. c 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.
  4. d Separation (retirement or early separation) from military service as of December 31, 2006 (excludes death as a reason for separation).
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