Table 3.
Neuropsychology scores
| PCA-pure mean (SD) | PCA-motor mean (SD) | Unpaired t test (p-value) | Normative mean (SD) | PCA-pure number (%) below the 5th percentile | PCA-motor number (%) below the 5th percentile | |
|---|---|---|---|---|---|---|
| Interval between MRI and psychology (months) | 3.21 (4.25) | 3.05 (6.04) | 0.93 | — | — | — |
| General function | ||||||
| sRMT words (/25)a | 19.2 (2.83) | 20.3 (2.60) | 0.30 | 23.5 (2.10) | 17 (81.0) | 5 (55.6) |
| sRMT faces (/25)a | 18.6 (5.63) | 15.5 (4.71) | 0.30 | 22.8 (1.90) | 4 (19.1) | 4 (44.4) |
| Concrete synonyms (/25)b | 19.4 (5.67) | 20.8 (4.63) | 0.54 | 20.8 (3.00) | 3 (14.2) | 1 (11.1) |
| Naming from description (/20)c | 13.3 (6.77) | 12.4 (4.69) | 0.72 | 18.9 (1.50) | 11 (52.4) | 7 (77.8) |
| Gesture production | 11.6 (4.13) | 8.56 (4.16) | 0.08 | — | — | — |
| Non-visual parietal | ||||||
| Calculation (adap. GDA/26)d | 9.24 (5.20) | 9.33 (5.24) | 0.96 | 20.7 (3.10) | 19 (90.5) | 8 (88.9) |
| Spelling (Baxter/20)e | 8.05 (6.71) | 7.44 (7.23) | 0.83 | 19.5 (6.49) | 10 (47.6) | 5 (55.6) |
| Visual function | ||||||
| Figure-ground (/20)f | 15.3 (3.73) | 15.0 (4.00) | 0.83 | 19.9 (0.30) | 17 (81.0) | 8 (88.9) |
| Fragmented letters (/20)f | 3.72 (4.59) | 1.11 (1.62) | 0.11 | 18.8 (1.40) | 17 (81.0) | 9 (100) |
| Object decision (/20)f | 10.6 (5.31) | 9.56 (4.28) | 0.61 | 17.7 (1.90) | 14 (66.7) | 9 (100) |
| Usual views (/20)g | 13.7 (7.09) | 7.75 (5.74) | 0.16 | 19.7 (0.50) | 6 (28.6) | 4 (44.4) |
| Unusual views (/20)g | 4.90 (4.82) | 2.25 (1.89) | 0.32 | 17.1 (3.00) | 9 (42.9) | 4 (44.4) |
| Number location (/20)f | 3.06 (3.37) | 1.44 (2.01) | 0.20 | 9.40 (1.10) | 15 (71.4) | 9 (100) |
| Dot counting (/20)f | 3.95 (3.73) | 3.00 (3.57) | 0.53 | 9.90 (0.20) | 17 (81.0) | 8 (88.9) |
Mean and standard deviation of raw scores for the PCA patient group and relevant normative data.
Key: MRI, magnetic resonance imaging; PCA, posterior cortical atrophy; sRMT, Short Recognition Memory Test.
Normative data samples are as follows:
c
Randlesome (unpublished data N = 100).
d
Crutch (unpublished data).