Table 1.

Demographic and clinical data for study subjects.

Group	Healthy volunteers	Mild TBI	Severe TBI
Number of subjects	20	20	20
GCS (24 h of injury)	NA	14.85 ± 0.37	3.65 ± 1.2 (intubated)
Injury Severity Score	NA	5.4 ± 2.4	27.5 ± 8.2
Age (years)	25.2 ± 6.7	36.1 ± 13.3	25.8 ± 9.8
Female/Male	4/16	6/14	4/16
Hispanic ethnicity	6	3	4
Race
White	16	18	16
African American	3	2	3
Asian	1	0	1

TBI, traumatic brain injury; values in mean ± standard deviation.