Table 1.

Participant demographics

	Group
	Severe TBI (N=15)	Complicated mild/moderate TBI (N=40)	OI (N=71)
Age at injury (years), M (SD)	5.12 (0.97)	5.21 (1.21)	5.07 (1.06)
Age at last assessment (years), M (SD)	12.13 (1.57)	11.99 (1.09)	11.92 (1.08)
Male, n (%)	9 (60.0%)	23 (58.0%)	37 (52.1%)
White race, n (%)	10 (66.7%)	31 (77.5%)	55 (77.5%)
Census tract median family income, M (SD)	56,720 (20,729)	69,999 (25,944)	68,608 (24,335)
Maternal education, n (%)
< High school	3 (20.0%)	4 (10.0%)	5 (7.0%)
High school/GED	8 (53.3%)	14 (35.0%)	26 (36.6%)
Partial college	3 (20.0%)	9 (%)	14 (19.7%)
College graduate	1 (6.7%)	13 (32.5%)	26 (36.6%)