Driving Competence in Mild Dementia with Lewy Bodies: In Search of Cognitive Predictors Using Driving Simulation

Table 1

Differences in simulated driving performance between participants with Dementia with Lewy Bodies (DLB) and controls.

Variable classification	Variable	DLB group		Control group		df
		Mean DLB	SD DLB	Mean Ctrls	SD Ctrls
Intersection behaviour	Total number of traffic light tickets	2.47	.52	0.43	0.60	1, 34	113.62	<.001
Speed	Number of speed exceedances	17.00	5.64	12.24	4.74	1, 34	7.53	.01
	Over the speed limit percent of time	23.78	16.53	12.95	8.04	1, 34	6.82	.01
Lateral control	Total number of centerline crossings	9.67	4.34	2.62	3.34	1, 34	30.39	<.001
	Total number of road edge excursions	17.80	10.43	7.52	9.76	1, 34	9.17	.01
	Out of lane percent of time	12.65	12.59	3.46	5.40	1, 34	9.01	.01
Crash	Total number of crashes	3.27	1.75	1.05	1.24	1, 34	19.83	<.001
Composite indicators	Rater score	284.17	80.00	107.74	59.64	1, 34	57.61	<.001
	Simulator errors	57.07	18.03	27.86	16.18	1, 34	25.95	<.001