SWM hyperintensity in different age groups
| Age (n) | Grade 0 | Grade 1 | Grade 2 | |||
|---|---|---|---|---|---|---|
| Reader A | Reader B | Reader A | Reader B | Reader A | Reader B | |
| 0–30 years (20) | 20 | 20 | 0 | 0 | 0 | 0 |
| 31–40 years (20) | 16 | 19 | 4 | 1 | 0 | 0 |
| 41–50 years (21) | 20 | 20 | 1 | 1 | 0 | 0 |
| 51–60 years (21) | 14 | 15 | 6 | 6 | 1 | 0 |
| 61–70 years (20) | 10 | 13 | 9 | 6 | 1 | 1 |
| 71–80 years (20) | 5 | 6 | 12 | 11 | 3 | 3 |
Note:—SWM indicates subcortical white matter.