Table 2.

Mechanism of injury for the whole TBI sample as well as the CI and non-CI subgroup within the TBI sample. Data are reported in terms of the percentage of the sample, mean age, standard deviation and age range in years.

Mechanism of Injury	All TBI % (N)	Age (yr)	Standard Deviation of Age (yr)	Age Range (yr)
	Entire TBI Sample (N=557 Total Cases)
Motor Vehicle Accident (MVA)	70.9 (395/557)	37.2	16.2	5 to 82
Fall	14.7 (82/557)	54.7	19.8	16 to 89
Strike or blow to the head from or against an object (S/B)	9.2 (51/557)	38.5	14.9	9 to 82
Sports Injury (SI)	2.5 (14/557)	39.4	15.5	14 to 72
Other	2.7 (15/557)	49.8	14.9	26 to 71
Total	100.0 (557/557)	40.3	17.4	5 to 89
	CI subgroup within TBI (N=130 Total Cases)
Motor Vehicle Accident (MVA)	69.2 (90/130)	39.7	16.6	12 to 79
Fall	13.1 (17/130)	53.9	17.7	23 to 82
Strike or blow to the head from or against an object	11.5 (15/130)	44.3	11.2	21 to 58
Sports Injury (SI)	1.5 (2/130)	35.5	6.7	35 to 40
Other	4.6 (6/130)	52.0	18.9	26 to 71
Total	100.0 (130/130)	46.0	16.1	12 to 82
	Non-CI subgroup within TBI (N=427 Total Cases)
Motor Vehicle Accident (MVA)	71.4 (305/427)	36.4	16.2	5 to 82
Fall	15.2 (65/427)	55.1	20.5	16 to 89
Strike or blow to the head from or against an object	8.4 (36/427)	37.6	16.2	9 to 82
Sports Injury (SI)	2.8 (12/427)	42.4	18.1	14 to 72
Other	2.1 (9/427)	45.6	13.7	27 to 67
Total	100.0 (427/427)	43.4	16.9	5 to 89