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Table 1: Subject demographics across Ohio TBI Scores²³ (n = 56)
Ohio TBI Score Sex Age (yr) Blood on GRE Nonvisualized Brain
Male Female Mean Age SD Age Range on mQSM on pQSM
All 34 22 42.1 14.42778 20–74 10 31 5
    1 (none) 13 9 41.7 14.6878 20–74 1 13 3
    2 (mild) 2 2 44.0 15.71623 27–58 1 3 0
    3 (mild) 8 5 47.0 14.94434 30–71 4 8 1
    4 (moderate) 2 1 45.7 13.50309 32–59 0 1 0
    5 (severe) 9 5 37.9 13.96621 23–64 4 5 1
Correlation across TBI severity χ² = 0.17, P = .98^{^a} ANOVA F(3,52) = 0.74, P = .53 P = .11^{^b} χ² = 2.20, P = .53^{^a} P = .88^{^b}
Correlation with blood products on 3D GRE χ² = 0.04, P = .86^{^a} P = .49^{^c} – χ² = 2.99, P = .08^{^a} P = .10^{^b}
↵a χ² test.
↵b Fisher exact test.
↵c Student t test.

Ohio TBI Score	Sex		Age (yr)			Blood on GRE	Nonvisualized Brain
Ohio TBI Score	Male	Female	Mean Age	SD	Age Range	Blood on GRE	on mQSM	on pQSM
All	34	22	42.1	14.42778	20–74	10	31	5
1 (none)	13	9	41.7	14.6878	20–74	1	13	3
2 (mild)	2	2	44.0	15.71623	27–58	1	3	0
3 (mild)	8	5	47.0	14.94434	30–71	4	8	1
4 (moderate)	2	1	45.7	13.50309	32–59	0	1	0
5 (severe)	9	5	37.9	13.96621	23–64	4	5	1
Correlation across TBI severity	χ² = 0.17, P = .98^{^a}		ANOVA F(3,52) = 0.74, P = .53			P = .11^{^b}	χ² = 2.20, P = .53^{^a}	P = .88^{^b}
Correlation with blood products on 3D GRE	χ² = 0.04, P = .86^{^a}		P = .49^{^c}			–	χ² = 2.99, P = .08^{^a}	P = .10^{^b}