Table 1

Demographic, psychiatric and behavioral variables.

PTSD

CEC

HC


Variable

Mean

SD

Mean

SD

Mean

SD

F-statistic

p


Age

32.3

6.9

28.7

4.5

27.3

6.2

2.193

0.128

Education

13.9

1.7

13.8

2.2

13.5

2.0

0.065

0.938

Ethnicity (n)

Caucasian

6

10

5

χ2 = 6.20

0.185

Hispanic

3

2

5

Black

3

0

2

CTQ

39.8

5.4

42.6

6.5

-

-

0.858

0.371

CES

22.7

7.2

19.1

9.9

-

-

0.623

0.444

BDI

14.6

9.5

5.5

5.9

-

-

5.083

0.042

CAPS-Ba

19.0

7.3

3.9

6.9

-

-

20.194

< 0.001

CAPS-C

25.8

5.3

4.8

8.0

-

-

40.163

< 0.001

CAPS-D

25.0

3.9

11.0

8.4

-

-

18.584

< 0.001

CAPS Total

69.8

13.2

19.7

22.2

-

-

31.497

< 0.001

Task reaction time (ms)

70.974b

< 0.001b

Shape

1029

317

965

278

919

188

1.146c

0.384c

Angry

1458

435

1470

455

1347

251

Fear

1652

369

1625

532

1395

336

Happy

1257

289

1185

336

1009

161


a CAPS was measured in eight out of twelve of the PTSD group and ten out of twelve of the CEC group; btask effect; cgroup effect. BDI = Beck Depression Inventory; CAPS = Clinician-Administered PTSD Scale; CEC = combat exposed control; CES = Combat Exposure Scale; CTQ = Childhood Trauma Questionnaire; HC = healthy control; PTSD = post traumatic stress disorder.

Simmons et al. Biology of Mood & Anxiety Disorders 2011 1:6   doi:10.1186/2045-5380-1-6

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