. Author manuscript; available in PMC: 2013 Feb 11.

Published in final edited form as: Hum Factors. 2012 Aug;54(4):663–674. doi: 10.1177/0018720811435235

TABLE 5.

Demographic Characteristics and Driving Performance Scores of Study Participants Who Also Had Their Road Test Video Recorded

	Normal Participants (n = 28)		Cognitively Impaired Participants (n = 19)		All Participants (N = 47)

	M	SD	M	SD	M	SD
Gender (% male)^*	67.9		53.8		55.1
Age (years)^**	68.8	7.1	75.9	5.8	71.7	7.5
Driving experience (years)^*	50.5	6.1	55.7	10.3	52.6	8.4
Education (years)^*	16.3	3.4	13.6	3.9	15.2	3.9
MMSE^**	29.6	0.7	24.7	3.8	27.6	3.4
Road test error score^**	0.04	0.03	0.08	0.06	0.06	.05
Road test CDAS error score^*	0.11	0.07	0.16	0.06	0.13	0.07
Home CDAS error score^*	0.11	0.08	0.18	0.11	0.14	0.10

Note. Values are M and SD or %. MMSE = Mini-Mental State Examination; CDAS = Composite Driving Assessment Scale.

p < .05.

^**

p < .005.