Comparing Cognitive Profiles of Licensed Drivers with Mild Alzheimer’s Disease and Mild Dementia with Lewy Bodies

Table 4

Post hoc group comparisons (i.e., control, DLB, and AD) on measures of visuospatial/perceptual abilities.

Variable	Group	Comparison group	Mean difference	Std. error
VOSP total	AD	Control	−5.93	3.46	.092
		DLB	11.10	3.78	.005
	DLB	AD	−11.10	3.78	.005
		Control	−17.03	3.74	<.001
VOSP1 (incomplete letters)	AD	Control	−.74	.77	.341
		DLB	1.23	.84	.147
	DLB	AD	−1.23	.84	.147
		Control	−1.97	.83	.021
VOSP2 (silhouettes)	AD	Control	−3.32	1.38	.019
		DLB	1.17	1.50	.441
	DLB	AD	−1.17	1.50	.441
		Control	−4.49	1.49	.004
VOSP3 (object decisions)	AD	Control	−.94	.69	.182
		DLB	1.75	.76	.025
	DLB	AD	−1.75	.76	.025
		Control	−2.69	.75	.001
VOSP4 (progressive silhouettes)	AD	Control	.54	1.09	.622
		DLB	−1.85	1.19	.127
	DLB	AD	1.85	1.19	.127
		Control	2.39	1.18	.048
VOSP5 (dot counting)	AD	Control	−.12	.43	.787
		DLB	1.28	.47	.009
	DLB	AD	−1.28	.47	.009
		Control	−1.40	.47	.004
VOSP6 (position discrimination)	AD	Control	−1.29	.97	.189
		DLB	.92	1.06	.392
	DLB	AD	−.92	1.06	.392
		Control	−2.21	1.05	.040
VOSP7 (number location)	AD	Control	.83	.90	.360
		DLB	3.32	.98	.001
	DLB	AD	−3.32	.98	.001
		Control	−2.49	.97	.014
VOSP8 (cube analysis)	AD	Control	−.90	.94	.346
		DLB	3.28	1.03	.002
	DLB	AD	−3.28	1.03	.002
		Control	−4.18	1.02	<.001
VOSP object (1–4)	AD	Control	−4.45	1.88	.021
		DLB	2.30	2.05	.267
	DLB	AD	−2.30	2.05	.267
		Control	−6.75	2.03	.002
VOSP space (5–8)	AD	Control	−1.48	2.36	.535
		DLB	8.80	2.56	.001
	DLB	AD	−8.80	2.56	.001
		Control	−10.28	2.56	<.001