Table 1.
Sample descriptive statistics for complete cases (n = 533).
| Mean | SD | Median | Min | Max | Skew | |
|---|---|---|---|---|---|---|
| Age | 72.51 | 0.69 | 72.51 | 70.98 | 74.16 | 0.08 |
| WMH volume%ICV | 0.01 | 0.01 | 0.01 | 0.00 | 0.07 | 2.64 |
| Fazekas total WMH score | 2.47 | 1.14 | 2.00 | 0.00 | 6.00 | 0.88 |
| PVS visual rating | 2.16 | 0.71 | 2.00 | 1.00 | 4.00 | 0.18 |
| PVS Count | 258.07 | 94.81 | 251.00 | 23.00 | 536.00 | 0.34 |
| PVS volume(mm3) | 3274.78 | 1464.42 | 3098.00 | 245.00 | 8282.00 | 0.58 |
| PVS mean length(voxels) | 3.94 | 0.54 | 3.90 | 2.61 | 5.93 | 0.07 |
| PVS mean width(voxels) | 2.01 | 0.36 | 1.99 | 1.21 | 3.36 | 0.26 |
| PVS mean size(mm3) | 13.76 | 4.85 | 12.59 | 6.27 | 34.80 | 1.05 |
| Binary Variables | Male | Female | ||||
|---|---|---|---|---|---|---|
| Sex | 284(53.28%) | 249(47.72%) | ||||
| No | Yes | |||||
|---|---|---|---|---|---|---|
| Hypertension | 279(52.35%) | 254(47.65%) | ||||
| Diabetes | 482(90.43%) | 51(9.57%) | ||||
| Cholesterol | 324(60.79%) | 209(39.21%) | ||||
| Cardiovascular disease | 382(71.67%) | 151(28.33%) | ||||
| Stroke | 439(82.36%) | 94(17.64%) |
Note: PVS: perivascular spaces, WMH: white matter hyperintensities, ICV: intracranial volume, WMH volume is expressed as percentage of ICV.