Table 2.
Age and diagnosis characteristics of subjects at the time of their initial visit.
| Nondemented | Demented | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Age Group | N | n | mean | male | female | convert | n | Mean | male | female | CDR 0.5/1 |
| 60s | 34 | 23 | 65.71 | 6 | 17 | 3 | 11 | 65.67 | 8 | 3 | 8/3 |
| 70s | 71 | 35 | 74.91 | 11 | 24 | 4 | 36 | 73.97 | 20 | 16 | 29/7 |
| 80s | 41 | 26 | 84.30 | 9 | 17 | 7 | 15 | 82.33 | 7 | 8 | 13/2 |
| 90s | 4 | 2 | 92.50 | 0 | 2 | 0 | 2 | 93.00 | 1 | 1 | 1/1 |
| Total | 150 | 86 | 75.82 | 26 | 59 | 14 | 64 | 74.95 | 36 | 29 | 52/13 |
The convert column indicates individuals who were determined to have AD on a subsequent visit. CDR = Clinical Dementia Rating, with 0, 0.5, and 1 corresponding to nondemented, very mild, and AD. CDR 0.5 individuals may be considered to represent those elsewhere labeled as ‘mild cognitive impairment’ (MCI).