Table 2.
Estimated Braak stages in different groups
| Braak stage | Group (n) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Total | Healthy controls | TBI | TBI+PTSD | PTSD | |||||
| Amyloid-negative | Amyloid-positive | Amyloid-negative | Amyloid-positive | Amyloid-negative | Amyloid-positive | Amyloid-negative | Amyloid-positive | ||
| 0 | 39 | 10 | 4 | 1 | 2 | 4 | 4 | 7 | 7 |
| I | 3 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 0 |
| II | 25 | 3 | 3 | 1 | 2 | 3 | 3 | 5 | 5 |
| III | 7 | 0 | 0 | 0 | 2 | 1 | 1 | 0 | 3 |
| IV | 5 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 3 |
| V | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| VI | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 80 | 13 | 8 | 3 | 7 | 8 | 9 | 14 | 18 |
TBI traumatic brain injury, PTSD posttraumatic stress disorder, TBI+PTSD subjects with TBI who developed PTSD