Table 3 The prevalence of types of dementia in 85-year- olds examined in 1986–87 and 2008–10.

From: Decreasing prevalence of dementia in 85-year olds examined 22 years apart: the influence of education and stroke

 

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)

  1. 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.
  2. 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.
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