Table 3.
The prevalence of types of dementia in 85-year- olds examined in 1986–87 and 2008–10.
| Alzheimer’s Disease incl mixed dementia | Alzheimer’s Disease only | Mixed dementia | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 1986–87% (N) | 2008–10% (N) | OR (95%-CI) | 1986–87% (N) | 2008–10% (N) | OR (95%-CI) | 1986–87% (N) | 2008–10% (N) | OR (95%-CI) | |
| Men | 14.7 (21) | 9.0 (19) | 0.57 (0.30–1.11) | 12.6 (18) | 8.0 (17) | 0.61 (0.30–1.22) | 2.1 (3) | 0.9 (2) | 0.44 (0.07–2.69) |
| Women | 19.4 (68) | 16.7 (60) | 0.84 (0.57–1.23) | 15.1 (53) | 13.6 (49) | 0.89 (0.58–1.35) | 4.3 (15) | 3.1 (11) | 0.71 (0.32–1.56) |
| All | 18.0 (89) | 13.8 (79) | 0.73 (0.53–1.02) | 14.4 (71) | 11.6 (66) | 0.78 (0.54–1.12) | 3.6 (18) | 2.3 (13) | 0.62 (0.30–1.27) |
| Vascular dementia incl mixed dementia | Vascular dementia only | Other types of dementia | |||||||
| Men | 7.7 (11) | 7.5 (16) | 0.98 (0.44–2.18) | 5.6 (8) | 6.6 (14) | 1.19 (0.49–2.92) | 7.0 (10) | 2.8 (6) | 0.39 (0.14–1.09) |
| Women | 14.2 (50) | 7.5 (27) | 0.49 (0.30–0.80) | 10.0 (35) | 4.5 (16) | 0.42 (0.23–0.78) | 1.4 (5) | 2.5 (9) | 1.78 (0.59–5.36) |
| All | 12.3 (61) | 7.5 (43) | 0.58 (0.38–0.87) | 8.7 (43) | 5.3 (30) | 0.58 (0.36–0.94) | 3.0 (15) | 2.6 (15) | 0.86 (0.42–1.78) |
The sample examined in 1986–87 is reference group for all odds ratio (OR). Other types of dementia 1986–87: four alcoholic dementia, two Normal Pressure Hydrocephalus, one each with schizophrenia, severe physical illness, subdural hematoma, vitamin b12 defieciency, and five where the cause could not be determined.
Other types of dementia 2008–9: ten Parkinson’s disease, two Normal Pressure Hydrocephalus, one each with brain tumour, organic brain syndrome, and cause could not be determined.