Characteristics and performance of the six groups on short cognitive tests including mean scores and SD
| Group | Diagnosis | Patients (n) | Mean age | MMSE/30 | ACE-R/100 | TYM-MCI/30 |
| 1 | SMC | 96 | 59.2 (SD 9.2) | 28.6 (SD 1.1) | 90.8 (SD 5.5) | 19.8 (SD 5.0) |
| 2 | aMCI/AD | 58 | 67.8 (SD 7.4) | 26.8 (SD 1.5) | 81.3 (SD 5.3) | 9.4 (SD 4.6) |
| 3 | No clear diagnosis | 13 | 66.5 (SD 8.6) | 27.1 (SD 1.7) | 82.0 (SD 6.4) | 14.9 (SD 4.6) |
| 4 | Fixed deficits | 11 | 61.7 (SD 8.8) | 27.6 (SD 1.5) | 84.0 (SD 6.0) | 13.4 (SD 7.4) |
| 5 | Other neurological disease | 12 | 61.9 (SD 9.8) | 28.5 (SD 1.4) | 88.2 (SD 6.0) | 16.8 (SD 5.6) |
| 6 | Non-AD dementia | 10 | 66.6 (SD 12.5) | 27.4 (SD 1.7) | 82.8 (SD 7.1) | 14.0 (SD 4.3) |
ACE-R, Addenbrooke’s Cognitive Examinations; aMCI/AD, amnestic mild cognitive impairment or Alzheimer’s disease; MMSE, Mini-Mental State Examinations; SMC, subjective memory complaints; TYM-MCI, Test Your Memory for Mild Cognitive Impairment.