Table 1.

Characteristics of TBI patients and controls.

Group	Na	Age		Education (yrs)		Vocabularyb		GCSc		LOC (h)d		PTA (d)e		TSI (yr)f
		Mean	SD	Mean	SD	Mean	SD	Mean	SD	Median	IQR	Median	IQR	Mean	SD
Mild	13 (8)	33.7	13.1	13.2	2.0	28.8	3.6	14.6	0.7	0.00	0–0.13	0.0	0–0.30	1.19	0.42
Moderate	29 (15)	32.2	11.2	15.0	2.3	29.6	6.2	11.0	2.1	26.0	2–144	10.0	4.5–21	1.12	0.38
Severe	21 (14)	28.5	8.4	14.6	2.7	27.8	5.2	6.3	2.5	122	63–336	36	18–60	1.03	0.2
Controls	27 (11)	27.7	7.6	15.1	1.8	30.4	4.0	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a

^aNumber of males in parentheses.

^bRaw score on the vocabulary subtest of the Shipley Institute of Living Scale (Zachary, 1986).

^cGlasgow Coma Scale score (Teasdale and Jennett, 1974).

^dDuration of loss of consciousness.

^eDuration of post-traumatic amnesia.

^fTime since injury.