| Biomarker ROCs | Suspiciousness rho for alpha 0.05 |
| Low visual span (n 126) | 0.604 |
| Low visual speed of processing (% of age) (n 122) | 0.573 |
| Low auditory speed of processing (% of age) (n 121) | 0.568 |
| High noradrenaline (n 133) | 0.533 |
| Low competing words score (% of pass score) (n 124) | 0.477 |
| High adrenaline (n 133) | 0.458 |
| Low reverse digit span (n 128) | 0.412 |
| High distance vision score on right (n 128) | 0.390 |
| Long threshold per cent base length/duration (n 122) | 0.303 |
| High dopamine (n 133) | 0.299 |
| Low threshold peak middle ear pressure (n 124) | 0.284 |
| Low red cell folate (n 133) | 0.283 |
| High HPL/creatinine (n 133) | 0.268 |
| Low vitamin D (n 132) | 0.244 |
| High threshold stapes amplitude projected (n 123) | 0.236 |
| Low activated vitamin B6 (n 126) | 0.228 |
| Low threshold time to offset/base length (n 122) | 0.205 |
| High Serum B12 (n 134) | 0.199 |
| High threshold gradient middle ear pressure (n 124) | 0.196 |
| High threshold ear canal volume (ECV) (n 123) | 0.189 |
| High percent free copper to zinc ratio (n 133) | 0.181 |