. 2007 Feb 6;78(10):1064–1068. doi: 10.1136/jnnp.2006.108076

Table 2 Cognitive variables in patients with Alzheimer's disease and in those with dementia associated with Parkinson's disease.

Variable	Group	Mean	SD	Median	Mann– Whitney U	Z values	p Values
Naming objects and fingers	AD	0.95	0.99	1	114177	−1.19	0.235
Naming objects and fingers	PDD	0.86	0.91	1	114177	−1.19	0.235
Commands	AD	0.93	1.06	1	92760	−6.24	<0.000
Commands	PDD	1.38	1.18	1	92760	−6.24	<0.000
Constructional praxis	AD	1.10	0.99	1	88094	−7.38	<0.000
Constructional praxis	PDD	1.62	1.14	1	88094	−7.38	<0.000
Ideational praxis	AD	0.70	1.03	0	96604	−5.49	<0.000
Ideational praxis	PDD	1.24	1.48	1	96604	−5.49	<0.000
Orientation	AD	3.20	2.02	3	81213	−8.70	<0.000
Orientation	PDD	1.10	1.91	2	81213	−8.70	<0.000
Word recall	AD	7.06	1.43	7	94901	−5.49	<0.000
Word recall	PDD	6.54	1.39	6.67	94901	−5.49	<0.000
Word recognition	AD	6.95	3.04	7	102725	−3.72	<0.000
Word recognition	PDD	6.20	3.30	6	102725	−3.72	<0.000
Attention and calculation	AD	2.21	1.73	2	73677	−10.49	<0.000
Attention and calculation	PDD	3.37	1.48	4	73677	−10.49	<0.000

AD, Alzheimer's disease; PDD, dementia associated with Parkinson's disease.

Mann–Whitney U and p values for comparisons of the groups are given.