Table 1.
Description of the Overall Analysis Sample (N = 3,010) and by Birth Cohort
| 1902–1911 | 1912–1921 | 1922–1931 | 1932–1941 | Total | |
|---|---|---|---|---|---|
| Analysis sample, n | 308 | 1,170 | 931 | 601 | 3,010 |
| Incident dementia cases, n | 63 | 123 | 59 | 12 | 257 |
| Baseline age, mean (SD) | 80.37 (3.70) | 74.93 (7.84) | 78.61 (5.81) | 70.27 (2.90) | 75.69 (6.93) |
| Sex (female), % | 61.00 | 59.70 | 61.70 | 60.70 | 61.00 |
| Education, % | |||||
| Less than HS | 59.10 | 35.50 | 14.10 | 6.20 | 25.40 |
| HS | 16.90 | 40.20 | 47.00 | 44.40 | 40.80 |
| Higher than HS | 24.00 | 24.40 | 38.90 | 49.40 | 33.80 |
| Person-years, mean (SD) | 6.34 (4.06) | 8.06 (4.52) | 6.32 (3.62) | 6.66 (2.98) | 7.07 (4.01) |
| Study (MYHAT), % | 2.30 | 22.60 | 85.80 | 100 | 55.50 |
Note: HS = high school; MYHAT = Monongahela-Youghiogheny Healthy Aging Team.