Table 2.
Cognitive functions
| SD | AD | Control | Kruskal-Wallis H | Post hoc analyses | |
|---|---|---|---|---|---|
| MMSE (/30) | 21.9±6.2 | 22.3±2.9 | 28.1±2.1 | 28.8** | SD, AD < Control |
| Digit span | |||||
| Forward | 4.8±1.1 | 4.7±1.1 | 5.9±1.1 | 12.9** | SD, AD < Control |
| Backward | 3.4±1.1 | 3.0±0.8 | 4.0±0.9 | 12.6** | SD, AD < Control |
| WAIS-III | |||||
| Information | 3.8±1.5 | 7.6±2.0 | 10.9±3.0 | 38.8*** | SD < AD < Control |
| Verbal fluency | |||||
| Category | 6.2±4.3 | 11.5±4.4 | 17.3±5.4 | 30.4*** | SD < AD < Control |
| Initial letter | 3.6±2.3 | 8.8±4.0 | 11.8±0.4 | 24.6*** | SD < AD, Control |
Mean ± standard deviation.
***
p < 0.001
**
p < 0.01. SD, semantic dementia; AD, Alzheimer disease; MMSE, Mini-Mental State Examination; WAIS-III, Wechsler Adult Intelligence Scale-III.