. Author manuscript; available in PMC: 2016 Aug 31.

Published in final edited form as: J Neurol Sci. 2016 May 13;367:26–31. doi: 10.1016/j.jns.2016.05.020

Table 2.

Background neuropsychological data: mean ± SD and significance of pairwise comparison between groups.

Patient groups	tAD	PCA1	PCA2	Pairwise comparison
				PCA2 vs PCA1	PCA2 vs tAD
N	18	16	5	p^a	p^a
Phonemic fluency	10.6 ± 12.1	8.8 ± 7.6	16.8 ± 11.0	0.08^b	0.29
Semantic fluency	8.4 ± 4.9	5.1 ± 3.9	3.4 ± 3.3	0.39^b	0.04^b
Digit forward	4.0 ± 1.2	3.3 ± 1.1	4.2 ± 1.0	0.16	0.76
Digit backward	2.2 ± 1.2	1.0 ± 1.1	1.8 ± 1.7	0.32	0.66
WL immediate	9.3 ± 7.5	6.5 ± 6.3	10.6 ± 7.4	0.20	0.60
WL delayed	0.5 ± 1.2	0.1 ± 0.7	0.8 ± 1.7	0.33	0.82
Brief BNT	11.6 ± 3.0	9.0 ± 3.7	9.6 ± 4.1	0.67	0.24
Praxis
Imitation	6.7 ± 2.2	3.3 ± 3.1	4 ± 3.7	0.71^b	0.08
Symbolic	9.8 ± 0.4	9.3 ± 1.7	6 ± 5.4	0.11	0.03
Object use	8.5 ± 2.9^c	4.8 ± 4.2	2 ± 4.4	0.15	0.005
Ideational	2^c	1.6 ± 0.8	1.3 ± 1.0	0.34	0.006

Bold means statistically significant. Italics means trends towards significance. WL: Word List [20]; BNT: Boston Naming Test [21].

Mann-Whitney U test (except indicated).

Unpaired t-test.

n = 14.