Table 1.

Cervical spine motion in degrees for patients exiting vehicle independently.

	Unassisted, no CC		Unassisted, with CC
	Mean	Std Dev	Mean	Std Dev
Starting Angle (in degrees)	8	2.8	4.2	3.9
Mean Change (average angle during movement less the starting angle)	8.7	11.9	1.4	4
Variation During Movement (std dev during movement)	10.6	7.5	1.2	0.1
Peak change (range of motion)	39.8	19.3	6.8	1.8

CC, cervical collar; Std, standard deviation