Research Article

Posterior AD-Type Pathology: Cognitive Subtypes Emerging from a Cluster Analysis

Table 2

Variables used for the principal component analysis. Means (sd) and ranges of the row scores obtained in DAT and PCA are reported.

Cognitive domains explored DATPCA

Memory
 Rey immediate recall 17.7
(8.6)
24.7
(10.4)
 Rey delayed recall 0.7
(1.6)
3.2
(2.8)
 Rey recognition (0-1)0.7
(0.1) 
0.8
(0.1)
  Babcock memory test (0–28)2.1
(2.4)
3.7
(3.8)
 Digit span forward (0–9)4.9
(0.7)
5.1
(1.2)
 Memory face 1.6
(1.2)
2.9
(1.4)
Visuoperceptual
 FEEST 37.1
(8.8)
32.1
(11.0)
 Digital agnosia 3.2
(1.7)
2.0
(1.6)
 Benton face recognition 34.4
(11.5)
25.3
(17.8)
 Famous face recognition 24.4
(5.4)
18.3
(12.2)
 Vosp X-detection 18.2
(1.9)
14.6
(5.6)
 Color naming 4.2
(1.1)
4.3
(1.2)
Visuospatial
 Spatial span forward (0–9)4.2
(1.0)
2.3
(2.0)
 Double barrage (0-1)0.9
(0.1)
0.7
(0.2)
 Navon letters 18.4
(9.6)
16.3
(8.0)
 Letter cancellation 99.9
(9.8)
72
(36.7)
Executive functions
 Rey’s figure copy (0–36)19
(12.7)
3.0
(5.1)
Language
 Letter fluency (F, A, S)21.7
(13.9)
22.2
(13.4)
 Semantic fluency9.2
(4.3)
6.6
(3.7)
 Reading 12.8
(3.3)
11.3
(3.8)
 Writing 10.2
(2.7)
7.6
(4.0)
 Object naming 15.5
(4.0)
13.1
(5.8)
 Sentence comprehension 12.0
(2.5)
7.5
(5.0)
Calculation
 Addition 1.7
(1.1)
1.0
(1.0)
 Subtraction 1.3
(1.1)
0.9
(1.0)
  Multiplication 1.8
(1.4)
1.3
(1.4)

FEEST: facial expression of emotion: stimuli and tests; VOSP: visual object and space perception battery. For references see online resource.