Table 3.
Correlation study in 18 patients with SCA1, SCA2 or SCA3
| Tests | Age | Age of onset | Disease duration | Years of education | ICARS | ADL |
|---|---|---|---|---|---|---|
| MMSE | NS | NS | NS | NS | -0.478* | -0.558* |
| DS (forward) | NS | NS | NS | 0.577* | -0.577* | -0.703** |
| DS (backward) | NS | NS | NS | NS | NS | NS |
| RVR (total number) | NS | NS | NS | NS | NS | NS |
| RVR (Correct number) | NS | NS | NS | NS | NS | NS |
| Immediate word recall | NS | NS | NS | NS | NS | NS |
| Delayed word recall | NS | -0.470* | NS | NS | NS | NS |
| Executive command | NS | NS | NS | NS | NS | NS |
| Stroop test A | NS | NS | NS | NS | 0.596** | 0.728** |
| Stroop test B | 0.609** | 0.494* | NS | -0.479* | 0.610** | 0.676** |
| Stroop test C | NS | NS | NS | NS | 0.584* | 0.669** |
| CDT | -0.670* | -0.668** | NS | NS | -0.528* | -0.628** |
| CFE | -0.512* | NS | -0.558* | NS | -0.504* | -0.491* |
| Orientation function | 0.779** | 0.747** | 0.498* | NS | 0.651** | 0.663** |
Note: ADL, activities of daily living; ICARS, international cooperative ataxia rating scale. MMSE, mini-mental state examination; DS, Digit Span; RVR, Rapid Verbal Retrieve; CDT, Clock Drawing Test; CFE, Comprehensive Functional Evaluation. Data are means ± SD.
*
P < 0.05;
**
P < 0.01;
***, P < 0.001. P1, statistical difference between patients of SCA1 and control 1; P2, statistical difference between patients with SCA2 and control 2; P3, statistical difference between patients with SCA3 and control 2.