Table 1 Summary of the Toyama Dementia Survey
From: Future projections of the prevalence of dementia in Japan: results from the Toyama Dementia Survey
Year of survey | |||||
|---|---|---|---|---|---|
1985 | 1990 | 1996 | 2001 | 2014 | |
Extraction rate (%) | 1.0 | 0.9 | 1.0 | 1.0 | 0.5 |
Agreement rate (%) | 94.4 | 96.8 | 92.2 | 90.0 | 84.8 |
Primary research collaborators | 1416 | 1452 | 1,44 | 2046 | 1303 |
Second research collaborators | 116 | 93 | 132 | 207 | 180 |
Dementia | 60 | 73 | 102 | 159 | 146 |
Prevalence (%) | 4.7 | 5.7 | 7.2 | 8.8 | 15.7 |
Age-adjusted disease rate (%) | 4.9 | 5.4 | 5.7 | 7.0 | 9.6 |
Sex and age group disease rate (%) | |||||
Male | |||||
65–69 | 1.7 | 2.6 | 2.1 | 1.5 | 5.1 |
70–74 | 1.1 | 2.3 | 3.6 | 3.4 | 6.0 |
75–79 | 4.0 | 8.0 | 10.2 | 9.6 | 9.5 |
80–84 | 7.2 | 19.1 | 10.9 | 17.0 | 29.0 |
≥ 8590 | 11.1 | 21.2 | 14.4 | 22.6 | 38.3 |
Female | |||||
65–69 | 0.9 | 1.5 | 0.3 | 3.0 | 1.3 |
70–74 | 1.7 | 1.4 | 1.8 | 2.8 | 3.6 |
75–79 | 6.3 | 2.2 | 4.2 | 6.1 | 8.1 |
80–84 | 21.5 | 10.5 | 13.5 | 15.5 | 22.8 |
≥ 8590 | 22.6 | 30.8 | 36.1 | 37.8 | 47.4 |