Longitudinal atrophy sample
| Nondemented | Converter | AD | |
|---|---|---|---|
| n | 44 | 8 | 40 |
| Male/female | 34/10 | 3/5 | 16/24 |
| Age (years) | 78.4 | 77.7 | 76.7. |
| Education (years) | 14.9 | 15.1 | 13.5 |
| CDR time 1 (n) | 0 (44) | 0 (8) | 0.5 (31), 1(9) |
| CDR time 2 (n) | 0 (44) | 0.5 (8) | 0.5 (23), 1 (16), 2 (1) |
| MMSE time 1 | 29.3 | 28.8 | 24.4 |
| MMSE time 2 | 29.1 | 28.6 | 23.9 |
| Delay (years) | 2.15 | 2.57 | 1.72 |
Analyses subdividing the AD participants by dementia severity do so using the CDR at time 1, yielding 31 very mild and 9 mild participants (see Fig. 3).