| Stroke Subtype | Age (years) | WMH (mm3) |
| Cardioembolic Major Stroke | 71.8 | 8130 |
| Small Artery Occlusion | 62.7 | 7530 |
| Large Artery Atherosclerosis | 65.6 | 5760 |
| Undetermined | 61.9 | 5140 |
| Other | 49.0 | 2160 |
| All | 63.4 | 5860 |