Demographic and clinical characteristics at participants’ first year within each age group*
| Characteristic | % of participants; age group and dementia status | |||||
|---|---|---|---|---|---|---|
| Age 65–74 yr | Age 75–84 yr | Age ≥ 85 yr | ||||
| Dementia n = 9135 | No dementia n = 652 620 | Dementia n = 23 747 | No dementia n = 330 414 | Dementia n = 34 752 | No dementia n = 123 786 | |
| Women | 50.0 | 50.2 | 56.7 | 54.3 | 66.7 | 61.5 |
| Men | 50.0 | 49.8 | 43.3 | 45.7 | 33.3 | 38.5 |
| Rural | 11.6 | 13.1 | 10.9 | 12.6 | 10.3 | 11.0 |
| Lowest SES neighbourhood quintile | 25.8 | 18.3 | 23.5 | 20.0 | 22.7 | 22.8 |
| No. of nondementia morbidities | ||||||
| 0 | 4.7 | 24.0 | 3.7 | 12.8 | 2.4 | 11.2 |
| 1 | 10.0 | 25.0 | 8.8 | 17.6 | 6.7 | 10.9 |
| 2 | 13.4 | 20.5 | 13.1 | 20.2 | 11.8 | 16.1 |
| 3 | 15.5 | 14.0 | 15.5 | 18.0 | 15.8 | 17.8 |
| ≥ 4 | 56.3 | 16.5 | 59.0 | 31.4 | 63.3 | 44.0 |
| Hypertension | 64.8 | 50.6 | 73.5 | 67.7 | 79.0 | 74.2 |
| Chronic kidney disease | 39.2 | 21.8 | 50.7 | 40.0 | 66.3 | 56.9 |
| Diabetes | 32.0 | 17.8 | 30.4 | 21.6 | 25.5 | 19.9 |
| Chronic pulmonary disease | 34.3 | 14.2 | 34.8 | 21.3 | 34.4 | 25.1 |
| Chronic pain | 18.5 | 14.7 | 17.1 | 16.8 | 15.0 | 16.0 |
| Hypothyroidism | 17.9 | 11.3 | 20.8 | 15.5 | 24.8 | 19.2 |
| Stroke or TIA | 31.1 | 7.1 | 35.0 | 13.7 | 38.2 | 21.1 |
| Gout | 10.6 | 8.6 | 12.5 | 11.5 | 13.7 | 13.0 |
| Chronic heart failure | 20.1 | 4.9 | 27.0 | 11.7 | 35.2 | 22.3 |
| Atrial fibrillation | 12.1 | 4.5 | 19.9 | 11.0 | 26.8 | 18.5 |
| Depression | 33.6 | 7.0 | 27.1 | 6.5 | 21.2 | 6.4 |
| Cancer, nonmetastatic | 5.6 | 4.5 | 7.4 | 7.1 | 7.2 | 7.1 |
| Myocardial infarction | 5.6 | 3.3 | 7.1 | 5.1 | 7.9 | 6.5 |
| Rheumatoid arthritis | 5.4 | 2.7 | 5.6 | 4.2 | 6.3 | 5.0 |
| Asthma | 6.5 | 2.7 | 5.6 | 3.5 | 5.0 | 4.0 |
| Alcohol misuse | 19.5 | 2.4 | 10.0 | 2.0 | 4.2 | 1.2 |
| Peripheral vascular disease | 5.4 | 1.5 | 5.8 | 3.0 | 5.5 | 3.9 |
| Irritable bowel syndrome | 4.1 | 2.0 | 3.6 | 2.1 | 3.1 | 2.0 |
| Cancer, metastatic | 3.2 | 1.5 | 3.5 | 2.3 | 3.0 | 2.6 |
| Parkinson disease | 10.4 | 0.7 | 11.4 | 1.7 | 9.3 | 2.4 |
| Constipation, severe | 5.1 | 0.8 | 5.6 | 1.7 | 6.7 | 3.1 |
| Epilepsy | 11.8 | 1.3 | 5.9 | 1.3 | 3.7 | 1.2 |
| Inflammatory bowel disease | 1.5 | 1.0 | 1.4 | 1.0 | 1.0 | 0.8 |
| Schizophrenia | 15.6 | 0.8 | 7.0 | 0.5 | 3.5 | 0.3 |
| Psoriasis | 1.7 | 0.8 | 1.3 | 0.9 | 1.0 | 0.8 |
| Cancer, lymphoma | 1.2 | 0.6 | 1.1 | 0.8 | 1.0 | 0.9 |
| Multiple sclerosis | 4.1 | 0.7 | 1.4 | 0.4 | 0.7 | 0.3 |
| Peptic ulcer disease | 1.3 | 0.2 | 1.1 | 0.4 | 0.9 | 0.4 |
| Cirrhosis | 1.7 | 0.3 | 0.7 | 0.2 | 0.2 | 0.1 |
| Chronic viral hepatitis B | 0.2 | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 |
Note: SES = socioeconomic status, TIA = transient ischemic attack.
↵* Many participants have data within multiple age groups.