Table 1 Sample characteristics.
Definite AD | Probable AD | Non-AD | |
|---|---|---|---|
Number | 614 | 2026 | 38,710 |
Age | 80.7 (80.2–81.1) | 79.2 (79.0–79.5) | 74.5 (74.4–74.5) |
Sex (male: female) | 229 (44.6%): 285 (55.4%) | 733 (36.2%): 1293 (63.8%) | 18,200 (47.0%): 20,510 (53.0%) |
Income levela | 6.00 (5.73–6.27) | 5.90 (5.87–5.93) | 6.02 (5.87–6.17) |