Table 1.

Predictor variables.

Occupant characteristics	Type	N	Mean	Median	Minimum	Maximum	S.D.
Gender	Nominal	496
Age	Continuous	489	45.9 years	47.0 years	6.0 years	93.0 years	18.6 years
Crash severity
Change of velocity	Continuous	501	21.3 km/h	16.7 km/h	3.9 km/h	126.2 km/h	14.6 km/h
Mean acceleration	Continuous	501	5.8 g	4.9 g	1.2 g	22.8 g	3.1g
Peak acceleration	Continuous	501	14.4 g	11.5 g	2.8 g	66.2 g	9.0 g