Table 2.

Comparison of neuropsychological performances on BLAD of EOAD and LOAD groups.

BLAD subtests	EOAD (n = 109)	LOAD (n = 171)	U	p
Letter cancelation	3.55 ± 1.72	3.14 ± 1.36	8176	0.788
Digit span	6.16 ± 2.32	6.33 ± 2.83	8619	0.776
Verbal fluency	10.69 ± 4.39	11.08 ± 3.36	8903	0.767
Motor initiative	2.13 ± 0.75	2.21 ± 0.76	8223	0.342
Graphomotor initiative	1.00 ± 0.73	0.96 ± 0.65	7533	0.796
Auditory comprehension	3.91 ± 0.39	3.98 ± 0.13	5689	0.080
Sentence repetition	10.00 ± 1.41	10.41 ± 1.25	7066	0.136
Object naming	6.59 ± 0.79	6.89 ± 0.479	6790	0.025
Auditory comprehension token test	13.92 ± 4.83	614.58 ± 4.36	5868	0.953
Orientation	11.59 ± 3.34	10.56 ± 2.66	6891	0.001*
Information	14.91 ± 4.58	15.02 ± 3.67	8630	0.667
Interference in verbal memory	6.00 ± 2.55	6.51 ± 2.33	8830	0.907
WMS – word pair learning I	6.77 ± 3.49	6.89 ± 2.81	7699	0.809
WMS – word pair learning D	4.88 ± 2.36	5.07 ± 1.78	2358	0.571
WMS – logical memory I	3.03 ± 2.73	2.57 ± 1.94	4419	0.255
WMS – logical memory D	1.22 ± 1.65	0.71 ± 1.11	1987	0.571
WMS – visual memory I	3.88 ± 3.03	3.25 ± 2.22	2945	0.022
WMS – visual memory D	1.25 ± 1.56	0.85 ± 1.07	1802	0.118
Raven progressive matrices	5.44 ± 3.29	5.06 ± 2.50	7814	0.883
Interpretation of proverbs	4.39 ± 2.76	4.45 ± 2.60	8447	0.705
Right–left orientation	5.19 ± 1.40	5.57 ± 1.06	7749	0.029
Praxis	11.47 ± 0.98	11.90 ± 0.46	6964	<0.001*

BLAD, Battery of Lisbon for the Assessment of Dementia; EOAD, early onset Alzheimer disease; LOAD, late-onset Alzheimer disease; WMS, Wechsler Memory Scale (R); word pair learning I, word pair learning immediate; word pair learning D, word pair learning delayed; logical memory I, logical memory immediate; logical memory D, logical memory delayed; visual memory I, visual memory immediate; visual memory D, visual memory delayed.

*p-Values are significant at the 0.05 level adjusted for multiple comparisons with Bonferroni correction.