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Demographic characteristics of the incident AD group (N=399)
| Mean/N (SD/%) | |
|---|---|
| Age at enrollment | 81.0 (6.3) |
| Age at AD diagnosis | 86.9 (6.3) |
| Time to AD (years) | 5.9 (3.7) |
| Education | 16.5 (3.6) |
| Number of cognitive evaluations | 9.2 (3.2) |
| Female | 300 (75.2%) |
| Carriers of APOE ε4 allele | 118 (29.6%) |
