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Table 1 Average annual percent change in the incidence rate for PTSD prior to and following the initiation of Combat Operations in Iraq

From: Trends in the incidence of physician-diagnosed posttraumatic stress disorder among active-duty U.S. military personnel between 1999 and 2008

Item

Baseline 1999–2002

During OIF 2003–2008

Annual change (%)

95% CI

p

Annual change (%)

95% CI

p

All active-dutya

5.0

1.9, 8.3

0.002

43.0

40.6, 45.6

< 0.001

Sexb

 Female

−1.3

−5.1, 2.6

0.496

15.6

12.5,18.7

< 0.001

 Male

10.4

6.4, 14.4

< 0.001

53.8

50.9,56.8

< 0.001

Ageb

  < 20

−4.7

−11.5, 2.6

0.205

12.4

6.3, 18.8

< 0.001

 20–24

4.8

0.1, 9.7

0.045

40.4

36.8, 44.1

< 0.001

 25–29

8.6

1.6, 16.1

0.015

47.8

42.5, 53.3

< 0.001

 30–34

9.1

0.0, 19.0

0.049

48.1

41.2, 55.4

< 0.001

 35–40

8.0

−2.3, 19.3

0.133

53.7

45.3, 62.6

< 0.001

  > 40

8.0

−3.4, 20.8

0.178

50.7

42.0, 59.8

< 0.001

Raceb

 Black

3.3

−3.9, 11.1

0.374

44.8

38.6, 51.2

< 0.001

 Other

8.9

−0.3, 18.9

0.059

45.3

38.6, 52.4

< 0.001

 White

4.8

1.0, 8.7

0.012

42.3

39.4, 45.3

< 0.001

Marital Statusb

 Married

11.5

6.6, 16.5

< 0.001

48.6

45.1, 52.2

< 0.001

 Other

4.5

−7.4, 17.9

0.479

41.3

31.7, 51.5

< 0.001

 Single

−0.9

−4.9, 3.3

0.669

35.4

32.0, 38.9

< 0.001

Rankb

 E1-E4

2.6

−1.0, 6.3

0.156

35.4

32.5, 38.3

< 0.001

 E5-E9

9.4

3.3, 15.9

0.002

56.3

51.6, 61.1

< 0.001

 O1-O3

8.9

−7.5, 28.3

0.305

42.9

30.6, 56.3

< 0.001

 O4-O9

26.8

1.6, 58.4

0.036

35.0

21.8, 49.6

< 0.001

Serviceb

 Army

8.2

3.7, 12.8

< 0.001

53.2

49.8, 56.7

< 0.001

 Marines

14.5

5.0, 24.9

0.002

50.7

44.2, 57.5

< 0.001

 Navy

−3.0

−7.8, 2.0

0.228

21.6

17.4, 25.9

< 0.001

 Air Force

6.8

0.3, 13.6

0.039

23.0

18.4, 27.9

< 0.001

  1. a Adjusted for sex, age, race, marital status, military rank, and branch of military service; b Adjusted for all other variables in the table