Prevalence of dementia (per 100 000 population) in people aged 40–64 years by demographics and vascular morbidity
| Number of individuals | Number of cases | Prevalence of dementia per 100 000 population (95% CI) | |
|---|---|---|---|
| All people aged 40–64 | 616 245 | 1061 | 172 (161 to 182) |
| Age group | |||
| 40–44 | 143 010 | 108 | 75 (61 to 90) |
| 45–49 | 134 880 | 127 | 94 (77 to 110) |
| 50–54 | 118 914 | 162 | 136 (115 to 157) |
| 55–59 | 113 029 | 240 | 212 (186 to 240) |
| 60–64 | 106 304 | 424 | 399 (360 to 436) |
| Gender | |||
| Male | 310 999 | 404 | 130 (117 to 142) |
| Female | 305 246 | 657 | 215 (198 to 231 |
| Socioeconomic status | |||
| Quintile 1 (affluent) | 123 663 | 147 | 119 (99 to 139) |
| Quintile 2 | 136 549 | 175 | 128 (108 to 148) |
| Quintile 3 | 139 662 | 278 | 199 (179 to 219) |
| Quintile 4 | 114 056 | 230 | 202 (182 to 222) |
| Quintile 5 (deprived) | 102 123 | 231 | 226 (196 to 256) |
| Vascular comorbidity | |||
| Stroke/TIA | 8405 | 67 | 797 (607 to 987) |
| Chronic kidney disease | 4850 | 40 | 825 (570 to 1079) |
| Ischaemic heart disease | 21 513 | 99 | 460 (370 to 550) |
| Diabetes | 30 620 | 129 | 421 (348 to 493) |
| Hypertension | 92 542 | 287 | 310 (274 to 346)) |
| Peripheral vascular disease | 7056 | 38 | 539 (367 to 709) |
| Number of vascular comorbidities | |||
| None | 488 251 | 630 | 129 (118 to 139) |
| One | 96 994 | 257 | 265 (232 to 297) |
| Two | 24 262 | 131 | 540 (447 to 632) |
| Three | 5107 | 33 | 725 (491 to 957) |
| Four or more | 1001 | 10 | 999 (382 to 1615) |