Table 2.

Hypointensity Burden Group Comparisons: Concussion Versus Orthopedic Injury Controls.

Region	Concussion,	Orthopedic injury controls,	F or χ 2	P value	ηp 2
	mean (SD) (n = 35)	mean (SD) (n = 20)
Whole brain	1.6 × 10–4 (5.0 × 10–5)	1.6 × 10–4 (2.5 × 10–5)	.31	.58	.006
Amygdala	6.7 × 10–5 (7.7 × 10–5)	6.7 × 10–5 (9.6 × 10–5)	.005	.95	.000
Caudate	1.8 × 10–4 (1.1 × 10–4)	2.4 × 10–4 (1.7 × 10–4)	2.5	.12	.05
Cerebellum	1.0 × 10–4 (3.5 × 10–5)	9.7 × 10–5 (4.0 × 10–5)	.17	.68	.003
Hippocampus	1.3 × 10–4 (1.3 × 10–4)	1.6 × 10–4 (1.5 × 10–4)	.47	.50	.009
Insula	1.9 × 10–4 (9.9 × 10–5)	1.8 × 10–4 (9.1 × 10–5)	.65	.42	.01
Pallidum	8.5 × 10–4 (7.1 × 10–4)	8.3 × 10–4 (6.3 × 10–4)	.03	.87	.001
Putamen	7.8 × 10–5 (8.4 × 10–5)	1.1 × 10–4 (9.3 × 10–5)	1.9	.17	.04
Thalamus	1.1 × 10–4 (7.5 × 10–5)	1.0 × 10–4 (5.8 × 10–5)	.07	.79	.001

Abbreviation: SD, standard deviation.