. 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 4.

Demographic Characteristics and Driving Performance Scores for All Study Participants

	Normal Participants (n = 38)		Cognitively Impaired Participants (n = 42)		All Participants (N = 80)

	M	SD	M	SD	M	SD
Gender (% male)	60.5		47.6		53.8
Age (years)^**	68.9	7.2	76.1	6.0	73.1	7.3
Driving experience (years)^*	52.2	6.8	56.3	9.2	54.3	8.4
Education (years)^**	16.4	4.0	13.8	3.7	15.1	4.0
MMSE^**	29.5	0.7	25.0	3.1	27.1	3.2
Road test error score^**	0.03	0.02	0.08	0.06	0.06	0.05
Home CDAS error score^**	0.10	0.08	0.20	0.13	0.15	0.12

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

p < .05.

^**

p < .005.