Table 1.

Characteristics of the Study Cohort

	Injured (n = 78 males)	Control (n = 75 males)	z	p
Age (y)	17.95 (17.63–18.27)	18.43 (18.05–18.81)	-1.53	0.13
Height (in)	71.79 (71.18–72.40)	71.19 (70.62–71.76)	1.41	0.16
Weight (lb)	215.99 (205.11–226.86)	205.59 (196.47–214.70)	1.09	0.27
Y.I.S (y)	8.12 (7.41–8.84)	8.08 (7.45–8.71)	-0.01	0.99
P.SRC	0.64 (0.43–0.85)	0.52 (0.33–0.71)	0.80	0.42

Y.I.S, years in sport; P.SRC, number of previous sports-related concussions; p, value from Mann-Whitney U test; z, approximated z-score from U test.