Table 3.
Characteristics of scores on three MRI white matter rating scales
| Scale | Range of possible scores | Range of observed scores | Mean (SD) | Internal consistency reliability (Cronbach’s α) |
|---|---|---|---|---|
| Fazekas | 0–6 | 1–6 | 3.1 (1.6) | 0.65 |
| Scheltens | 0–84 | 3–39 | 13.4 (9.8) | 0.77 |
| van Sweiten | 0–12 | 0–11 | 3.4 (3.4) | 0.90 |
SD = standard deviation