Number of patients impaired per group (compared using Fisher’s exact test)
| Variant CJD, n = 10 | Sporadic CJD, n = 4 | Inherited prion disease, n = 16 | p Value | |
|---|---|---|---|---|
| Standardised test performances converted to percentile scores or cut off points: *⩽5th percentile indicating memory and naming impairment; †⩽5% cut off indicating perceptual impairment. | ||||
| ‡Only nine variant CJD patients tested; §only three sporadic CJD patients tested. | ||||
| Memory (words)* | 10 | 3 | 11 | 0.13 |
| Memory (faces)* | 10 | 3 | 13 | 0.32 |
| Nominal skills* | 9 | 3 | 5 | 0.006 |
| Visual perception† | 2 | 2 | 8 | 0.31 |
| Executive | 9‡ | 3§ | 14 | 0.24 |