TABLE 1.

Subject Characteristics^a

	Total Sample (N = 235)	No History of Concussion (n = 141)	History of Concussion (n = 94)
Age, y, mean ± SD	25.1 ± 3.0	24.95 ± 2.95	25.41 ± 3.01
Years of education, mean ± SD	15.8 ± 1.2	15.8 ± 1.1	15.7 ± 1.3
Treatment for headaches	15 (6)	6 (4)	9 (10)
Treatment for migraines	10 (4)	4 (3)	6 (6)
Epilepsy	2 (<1)	0	2 (2)
Alcohol abuse	2 (<1)	0	2 (2)
Psychiatric conditions	4 (2)	2 (1)	2 (2)
Dyslexia	7 (3)	3 (2)	4 (4)
ADD/ADHD	34 (14)	17 (12)	17 (18)

^aValues are reported as n (%) unless otherwise indicated. ADD, attention deficit disorder; ADHD, attention deficit hyperactivity disorder.