Demographics of dementia cases and whole cohort.
| Whole cohort | Dementia cases | |||||
|---|---|---|---|---|---|---|
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| n | (%) | Person-years | n | (%) | Person-years | |
| Total participants | 1,246,557 | 18,796,117 | 129,650 | 1,773,462 | ||
| Sex | ||||||
| Female | 658,518 | (53) | 9,963,822 | 82,571 | (64) | 1,118,479 |
| Male | 588,035 | (47) | 8,832,289 | 47,079 | (36) | 654,983 |
| Missing | <5 | (0) | 5 | 0 | (0) | 0 |
| Deprivation quintile* | ||||||
| 1 (Most deprived) | 224,376 | (18) | 3,276,397 | 24,915 | (19) | 334,806 |
| 2 | 238,021 | (19) | 3,438,409 | 26,344 | (20) | 353,203 |
| 3 | 264,799 | (21) | 3,939,140 | 27,798 | (21) | 377,314 |
| 4 | 242,115 | (19) | 3,696,385 | 25,317 | (20) | 346,736 |
| 5 (Least deprived) | 255,363 | (20) | 4,223,548 | 24,033 | (19) | 350,798 |
| Missing | 21,883 | (2) | 222,238 | 1,243 | (1) | 10,604 |
| Birth Decade | ||||||
| 1900-1910 | 40,380 | (3) | 231,761 | 7,633 | (6) | 51,713 |
| 1911-1920 | 130,388 | (10) | 1,157,531 | 32,515 | (25) | 334,063 |
| 1921-1930 | 228,475 | (18) | 2,962,413 | 50,179 | (39) | 720,464 |
| 1931-1940 | 271,791 | (22) | 4,451,912 | 27,922 | (22) | 470,036 |
| 1941-1950 | 373,971 | (30) | 6,500,674 | 9,450 | (7) | 163,509 |
| 1951-1960 | 201,552 | (16) | 3,491,826 | 1,951 | (2) | 33,677 |