TABLE B2.

Results from the univariate ANCOVAs from each metabolite (tNAA, tCr, tCho, Glx, and mI) between groups (Concussion vs. OI).

	tNAA		tCr		tCho		Glx		mI
ANCOVA model	F = 0.018, p = .895		F = 0.16, p = .69		F = 1.511, p = .22		F = 0.254, p = .614		F = 0.025, p = .874
	F	p	F	p	F	p	F	p	F	p
Covariates
Group	0.940	.333	2.711	.100	0.237	.627	0.671	.413	0.086	.77
Age	14.5	.0001	0.082	.774	0.944	.332	11.74	.001	0.026	.871
Sex	0.006	.940	0.964	.327	0.018	.894	3.917	.048	0.011	.917
Vendor	1589	.0001	156.3	.0001	370	.0001	554.9	.0001	497	.0001
Site	7.528	.006	3.264	.071	14.05	.0001	5.298	.022	0.587	.444
Group*age	0.939	.333	3.102	.079	0.073	0.786	0.870	.351	0.108	.742

Note: The significance of the model is included as well as the contributions of each covariate within the model. This model includes the Group*Age interaction term as a covariate. p‐values in bold were considered statistically significant at p < .05.

Abbreviation: OI, orthopedic injury.