Table 1.

Demographic Characteristics of Traumatic Brain Injured Subjects, Trauma Controls, and Trauma-Free Controls

Characteristic	Traumatic Brain Injury	Trauma Controls	Trauma-Free Controls
Number	514	132	102
Age, ya,b	30.0 ± 14.0	31.4 ± 13.5	24.5 ± 8.1
Men, %	73	72	64
Education, yb	12.1 ± 2.4	11.9 ± 2.5	12.4 ± 1.7

^ap < .001

^bData are presented as mean ± SD.