Table 1.

Mean (SD) demographic characteristics for the SRC and OI control groups.

	SRC	OI controls	p
Age (years)	16.0 (1.1)	16.4 (1.3)	0.6004
Gender	1 F; 12 M	6 F; 7 M	0.0730
Ethnicity/Race	3 AA; 0 A; 6 H; 4 C; 0 Other	5 AA; 1 A; 3 H; 3 C; 1 Other	0.5568
Contact sports	12 Yes, 1 No	9 Yes, 4 No	0.3217

A, Asian; AA, African American; C, Caucasian; F, female; H, Hispanic; M, male.