Table 2.

Descriptive statistics for combined sex data.

Group	Age (yrs.)	Mass (kg)	Concussion Hx (n)	Years of play (yrs.)
Rec. active ctrl (n = 12)	20.5 (19.5, 21.3)	68.0 (63.1, 72.9)	0 (0.0, 0.0)	0.0 (0.0, 0.0)
Pre-match (n = 19)	19.0 (18.5, 20.0)	70.5 (63.6, 78.4)	0.0 (0.0, 1.5)	1.0 (1.0, 2.0)*
Match-ctrl (n = 31)	22.0 (19.5, 27.5)+	81.8 (69.3, 96.1)	1.0 (0.0, 2.0)*	3.0 (1.0, 10.0)*
SRC (n = 17)	24.0 (20.0, 26.0)+	87.3 (75.0, 90.9)*	0.0 (0.0, 1.0)	4.0 (2.0, 8.0)*

Subjects were all Caucasian.

All data reported as median(Q1, Q3).

Rec. Active Ctrl = Recreationally active control group, Match-Ctrl = Match-Control group, SRC = Sport-related Concussion group, Hx = history, Q1 = 1st quartile, Q3 = 3rd quartile. * = statistically different compared to recreationally active control group (p < 0.05), ⁺ = statistically different compared to pre-match (p < 0.05).