Table 2.

Results of Linear Regression Evaluating Effects of Sex, Pre-Deployment Psychological Distress, Pre-Deployment Traumatic Brain Injury History, Deployment Stress Severity, and Severity of Deployment-Acquired Traumatic Brain Injury^* on Post-Deployment Post-Concussive Symptoms in Soldiers with Mild Traumatic Brain Injury (n = 822)

	3 months post-deployment (T2)				9 months post-deployment (T3)
	B	SE B	t	p	B	SE B	T	p
Female sex	−0.33	1.43	−0.23	0.82	−0.22	1.20	−0.18	0.86
Pre-deployment past-month general distress	0.16	0.01	11.68	< 0.001	0.10	0.01	7.87	<0.001
Deployment stress severity	0.40	0.11	3.66	0.001	0.34	0.09	3.76	0.001
Any lifetime pre-deployment TBI with LOC	1.03	0.43	2.40	0.025	1.08	0.44	2.43	0.023
Deployment-acquired TBI involved LOC or amnesia (versus “dazed” only)	2.48	0.65	3.80	0.001	2.40	0.67	3.60	0.002

TBI, traumatic brain injury; LOC, loss of consciousness.

Post-concussive symptoms (PCS) were measured with the PCS-8, which assessed severity of: balance problems or dizziness, sensitivity to noise, sensitivity to light, memory problems, irritability, difficulty concentrating, headaches, and feeling tired out or being easily fatigued.

^*Models also adjust for age group (<30 years vs. older), race, ethnicity, brigade combat team, and number of previous deployments.