Table 1.
Demographic characteristics
| Variable | n | Mean | Std Dev | Range |
|---|---|---|---|---|
| Age (years) | 67 | 73.8 | 9.6 | 47-94 |
| Education (years) | 68 | 15.7 | 2.7 | 9-23 |
| Female (%) | 42(62%) | |||
| Initial MMSE | 68 | 22.7 | 3.5 | 16-30 |
| Final MMSE | 56 | 11.6 | 5.6 | 0-22 |
| Initial CDR-G | 68 | 0.8 | 0.2 | 0.5-1 |
| Final CDR-G | 68 | 2.3 | 0.5 | 2-3 |
| Initial CDR-SB | 68 | 4.7 | 2.3 | 0.5-9 |
| Final CDR-SB | 68 | 13.6 | 2.7 | 10-18 |
| Follow up (years) | 68 | 3.9 | 0.89 | 3-6 |
| Braak stage | 68 | |||
| 3 | 1 (1%) | |||
| 4 | 7 (10%) | |||
| 5 | 32 (47%) | |||
| 6 | 28 (41%) | |||
| APOE 4 | 68 | |||
| No APOE 4 allele | 39 (57%) | |||
| 1 APOE 4 allele | 22 (32%) | |||
| 2 APOE 4 alleles | 7 (10%) | |||