Differentiation of neuropsychological features between posterior cortical atrophy and early onset Alzheimer’s disease

Table 1 Demographic data for patients diagnosed with posterior cortical atrophy (PCA) and early onset Alzheimer’s disease (EOAD). Controls were healthy adults with no apparent brain pathology

Sample characteristics	PCA	EOAD	Controls	p
Sample characteristics	(n = 18)	(n = 20)	(n = 20)	p
Female/male	10/8	12/8	12/8	.669^a
Age (SD), years	57.5 (6.1)	52.5 (7.3)	52.5 (7.7)	.054^b
Disease duration (SD), years	3 (2)	3 (1.8)	–	.602^c
Education (SD), years	10.2 (3.7)	10.7 (4.5)	12.4 (4.1)	.235^b
PIB-PET (+/−) (n = 9)^d	9/0	20/0	–

Note: Age, disease duration, and education did not differ significantly among the three groups
+, positive PIB PET scan; −, negative PIB PET scan
^aChi-square test
^bOne-way ANOVA
^cMann-Whitney test
^d9 of the PCA patients refused the PIB-PET scan

ISSN: 1471-2377