Table 1.

User statistics of all participants and the two subgroups.

	All Participants, n=80	Participants with good DSa performance, n=70	Participants with poor DS performance, n=10	Significance of group difference
Young (<40 years), n	26	26	0
Older (>50 years), without cognitive impairment (MoCAb≥26), n	44	38	6
Older (>50 years), with cognitive impairment (MoCA<26), n	10	6	4
MoCA, score (SD)	28.2 (2.9)	28.5 (2.8)	26.2 (3.1)	U 70,10=179.00, P=.004
TMTc A, seconds (SD)	28.0 (14.4)	26.9 (14.2)	35.7 (14.1)	U 68,9=535.00, P<.001
TMT B, seconds (SD) [30]	71.6 (52.5)	68.8 (53.2)	91.2 (45.7)	U 68,9=479.00, P=.003
CDT, score (SD)	6.2 (1.9)	6.5 (1.6)	4.3 (3.1)	U 70,10=170.00, P<.001
Timed-up-and-go-test, seconds (SD)	6.9 (3.2)	6.8 (2.9)	7.5 (4.7)	U 63,8=420.50, P=.001

^aDS: driving simulator

^bMoCA: Montreal Cognitive Assessment

^cTMT: trail making test (A and B)

^dCDT: clock drawing test