Table 1. Participant characteristics.
| Total | 65–74 years | ≥75 years | |
| n = 75,358 | n = 43,790 | n = 31,568 | |
| Age, years | 73.8 (6.0) | 69.5 (3.0) | 79.6 (3.8) |
| Men | 45.0 | 45.3 | 44.5 |
| Years of education | |||
| ≤9 | 37.4 | 30.6 | 47.3 |
| 10–12 | 39.9 | 43.1 | 35.2 |
| ≥13 | 22.7 | 26.2 | 17.4 |
| Married | 65.8 | 69.7 | 60.2 |
| Living alone | 22.0 | 20.6 | 23.8 |
| Currently working | 37.7 | 46.8 | 24.8 |
| Current smoker | 13.2 | 16.6 | 8.5 |
| Regularly exercising | 57.4 | 58.4 | 56.0 |
| Body mass index, kg/m2 | |||
| <18.5 | 7.3 | 6.6 | 8.4 |
| 18.5–24.9 | 68.7 | 68.8 | 68.5 |
| ≥25.0 | 23.9 | 24.6 | 23.1 |
| Diagnosed disease | |||
| Cancer | 9.3 | 8.6 | 10.3 |
| Heart disease | 11.1 | 8.9 | 13.8 |
| Stroke | 4.1 | 3.6 | 4.8 |
| Hypertension | 45.8 | 42.6 | 50.4 |
| Hyperlipidemia | 12.2 | 13.0 | 11.0 |
| Diabetes mellitus | 14.5 | 14.3 | 14.9 |
| Depression | 19.5 | 16.8 | 23.2 |
| Childhood SES | |||
| High/middle-high | 15.1 | 14.0 | 16.5 |
| Middle | 45.9 | 44.5 | 47.8 |
| Middle-low | 26.0 | 27.5 | 23.8 |
| Low | 13.1 | 14.0 | 11.9 |
| Subjective dementia symptoms | 6.6 | 3.7 | 10.6 |
SES, socioeconomic status.
Values represent mean (standard deviation) or %.