Table 2.

Demographic results for non-collision sport controls, and Australian rules footballers with and without a history of concussion.

	Non collision sport controls		Australian rules footballers
			No history of concussion		History of concussion
	Male	Females	Male	Female	Male	Female
N	23	19	19	23	31	8
Age	21.8 ± 0.9	22.4 ± 0.7	22.4 ± 0.5	23.5 ± 0.9	23.7 ± 0.5	25.9 ± 0.5
Years education*	16.6 ± 0.3	15.9 ± 0.4	16.0 ± 0.3	15.5 ± 0.4	16.9 ± 0.3	16.2 ± 0.7
Age commence all sport*	7 ± 0.6	7.2 ± 0.6	8.3 ± 1	5.3 ± 0.8	6.8 ± 0.8	5.3 ± 0.8
Years of all sport*	15.0 ± 0.5	13.7 ± 0.9	14.5 ± 1	17.6 ± 1.1	16.7 ±.8∧	18.2 ± 3.3
Age commence collision sport*	N/A	N/A	9.24 ±.8	17.6 ± 1.3	8.1 ± 0.5	17.0 ± 3.8
Years of collision sport participation*#	N/A	N/A	13.2 ± 0.8	5.6 ± 1.3	15.5 ± 0.8	9.0 ± 3.4
Number of previous concussions	N/A	N/A	N/A	N/A	2.9 ± 0.4	1.9 ± 0.4
Time since last concussion (years)	N/A	N/A	N/A	N/A	2.7 ± 0.4	5.1 ± 1.5

Results are presented as Mean ± SEM.

^*main effect for Sex;

^#main effect for history of concussion;

^∧HoC males less than NoHoC females; p < 0.05. Results are presented as Mean ± SEM.