| Biomarker ROCs | Excitement rho for alpha 0.05 |
| High noradrenaline (n 133) | 0.522 |
| Low auditory speed of processing (% of age) (n 121) | 0.493 |
| High adrenaline (n 133) | 0.437 |
| Low visual speed of processing (% of age) (n 121) | 0.437 |
| Low visual span (n 126) | 0.422 |
| Low competing words score (% of pass score) (n 124) | 0.382 |
| High dopamine (n 133) | 0.366 |
| High distance vision score on right (n 128) | 0.357 |
| Low reverse digit span (n 128) | 0.326 |
| Low red cell folate (n 133) | 0.291 |
| Long threshold per cent base length/duration (n 122) | 0.277 |
| Low activated vitamin B6 (n 126) | 0.268 |
| Low threshold time to offset/base length (n 122) | 0.223 |
| High threshold stapes amplitude projected (n 123) | 0.218 |
| High threshold ear canal volume (ECV) (n 123) | 0.206 |