Table 1.

Demographic information and self-rating scores for controls, PTSD patients, and patient subgroups with and without mTBI.

	Controls (n=34)	Patients (n=45)	PTSD+mTBI (n=34)	PTSD only (n=11)
Age (yrs)	33.3 + 8.0	32.6 + 7.1 (n.s.)	32.5 + 7.1	32.8 + 7.3
Education (yrs)	14.7 + 1.6	13.5 + 1.6 (***)	13.4 + 1.7	13.6 + 1.1
Handedness	31 R, 3 L	38 R, 5 L, 2 ambi	27 R, 5 L, 2 ambi	11 R
Deployed (n)	20	45	34	11
Combat (n)	9	45	34	11
TBI events (n)	--	11 one, 23 > one	11 one, 23 > one	--
LOC	--	25; 5 dazed, 4 uncertain	25; 5 dazed, 4 uncertain	--
Years post	--	4.0 + 1.8	3.9 + 1.6	4.4 + 2.5
PCL-M	27.0 + 11.0	58.0 + 13.1 (***)	57.9 + 12.6	58.2 + 15.2
BDI	5.9 + 7.1	19.8 + 10.1 (***)	19.4 + 9.5	21.0 + 12.2
BIS-11A	56.7 + 9.4	70.5 + 10.9 (***)	71.0 + 10.5	68.9 + 12.4

Note: The mean + standard deviation are given for age, education, estimated years post-event(s), PCL-M, BDI, and BIS-11A. n.s. = not significantly different from controls;

^***significantly different from controls at p<.001;

R = right, L = left, ambi = ambidextrous; LOC = loss of consciousness (of 34 patients with mTBI, 25 had LOC, 5 did not, and 4 were not sure whether they had LOC); PCL-M = PTSD checklist, military version; BDI = Beck Depression Inventory; BIS-11A = Barratt Impulsiveness Scale. The BIS-11A was scored using a prorating method to make it more comparable to the BIS-11. The patient subgroups did not differ from each other for age, education, years post-event, PCL-M, BDI, and BIS-11A.