Table 4:

Association^* between history of TBI and memory score trajectory, 2000–2014

	Model 1		Model 2
	β (95% CI)	P value	β (95% CI)	P value
Memory score
TBI history	−0.008 (−0.05, 0.03)	0.68	−0.0003 (−0.03, 0.03)	0.95
Time	−0.02 (−0.02, −0.01)	<.0001	−0.01 (−0.02, −0.007)	<.0001
Quadratic time	−0.002 (−0.002, −0.002)	<.0001	−0.002 (−0.002,−0.002)	<.0001
TBI history*time	−0.001 (−0.007, 0.005)	0.71	−0.002 (−0.008, 0.004)	0.56

TBI: Traumatic Brain Injury

Model 1 adjusted for age, gender, race and education. Model 2 was additionally adjusted for veteran status, marital status, depressive symptoms, ever have hypertension, diabetes, cancer, heart disease, stroke, lung disease, arthritis, and ever smoking.

^*Using Linear Mixed Models.