Table 1.

Sociodemographic and neuropsychological characteristics of included and excluded patients. See Table 3 for a detailed description of the Consortium to Establish a Registry for Alzheimer’s Disease Neuropsychological Assessment Battery (CERAD-NAB) scores.

	Included (N = 112)			Excluded (N = 34)
	M	SD	n	M	SD	n
Age	61.08	12.26	112	63.71	12.43	34
education (years)	13.12	2.23	112	12.94	2.47	34
M-WCST categories	2.99	1.87	112	3.19	2.23	16 #
CERAD-NAB (core)
Animal fluency	−0.99	2.49	108	−1.50	1.38	34
Abbreviated Boston Naming Test	−0.11	1.26	109	−0.11	1.28	31
Word list learning	−1.31	1.39	112	−1.57	1.49	34
Word list recall	−0.95	1.27	112	−1.05	1.23	34
Word list intrusions	−0.62	1.30	112	−0.12	1.05	34
Word list savings	−0.85	2.00	110	−0.80	1.81	34
Word list discriminability	−0.62	1.27	112	−0.83	1.23	34
Constructional praxis	−0.89	1.24	111	−1.13	1.40	34
Constructional praxis recall	−1.16	1.54	111	−1.59	2.00	34
Constructional praxis savings	−0.54	1.18	111	−0.82	1.25	34
Adjusted Chandler score	73.12	12.00	108	66.78	12.40	31
CERAD-NAB (extension)
Letter fluency	−1.12	1.30	108	−1.42	1.22	34
Trail Making Test A	−1.00	1.56	109	−1.30	1.57	32
Trail Making Test B	−1.14	1.47	101	−1.48	1.32	29

All CERAD-NAB scores are reported as standardized z-scores. SD = standard deviation; n = number of patients for which data on a specific variable are available. ^#, This low number of patients is due to the exclusion of 18 patients who quit the execution of the M-WCST ahead of schedule.