Table 1. Demographic and exposure characteristics of subject groups.

	N	Age	Years of exposure	Number of Concussions	Gender (%male)
Control	18	85.4 ± 9.4	0	0	50%
CTE	23	62.0 ± 16.5	16.0 ± 4.5	37.9 ± 53.5	100%
AD	50	83.9 ± 9.7	N/A	N/A	50%

Data expressed as mean ± SD.