Table 1.

Subject Characteristics by Group, Means (Standard Deviation)

	msTBI
	Slow IHTT	Normal IHTT	Healthy controls
N: Post-acute	14	17	48
Chronic	12	12	35
Age at first testing (years)	14.0 (2.5)	14.3 (3.3)	15.6 (2.7)
Sex (% female)	36%	24%	52%
Time since injury (weeks): Post-acute	11.6 (4.2)	12.6 (5.5)	N/A
Chronic	63.7 (7.8)	69.5 (8.0)	N/A
GCS: At admission	8.9 (3.6)	8.2 (3.9)	N/A
Lowest in 24 h	7.0 (3.6)	8.3 (4.0)	N/A
Parent education (years)	13.0 (3.7)	14.4 (3.7)	15.1 (3.6)
IHTT (msec)	26.0 (6.6)*^	7.9 (5.8)^	9.4 (5.8)*
Performance index: Post-acute	90.4 (12.6)*	98.6 (12.0)	104.0 (10.4)*
Chronic	93.8 (12.2)*	102.3 (13.4)	110.9 (10.3)*

TBI, traumatic brain injury; IHTT, interhemispheric transfer time; GCS, Glasgow Coma Scale.

^* or ^ Pairwise difference significant at p < 0.05.