Table 2.
Summary of some studies that evaluate the prevalence of dementia in respective countries or regions.
| Country/ region |
Study | Year | AD | VaD | Prevalence of dementia |
Reference |
|---|---|---|---|---|---|---|
| Europe | Collaborative study | 1990 | 4.4% > 65 years | 1.6% > 65 years | 6.4% > 65 years | [14] |
|
| ||||||
| Ommoord | Rotterdam Study | 1995 | 72% > 55 years | 16% > 55 years | 6.3% > 55 years | [15] |
|
| ||||||
| Italy | ILSA Study | 1992-1993 | 6.55% > 65 years | 3.30% > 65 years | 12.47% > 65 years | [16] |
|
| ||||||
| USA | ADAMS | 2007 | — | — | 14% > 71 years | [7] |
|
| ||||||
| Latin America | Delphi Consensus Study | 2005 | — | — | 7.3% > 75 years | [4] |
|
| ||||||
| Korea | KLoSHA | 2006 | 4.8% > 65 years | 1.0% > 65 years | 6.3% > 65 years | [17] |
|
| ||||||
| Singapore | Singaporean study | 1995 | — | — | Chinese: 2.5% and Malays: 4.0% among the elderly |
[18] |
|
| ||||||
| China | People's Republic of China study | 1980–2010 | 1.9% > 60 years | 0.9% > 60 years | 3.0% > 60 years | [19–21] |
|
| ||||||
| Africa-USA | Indianapolis-Ibadan Dementia Project | 2001 | Native Yoruba: 1.4%, African American: 6.3% |
— | Native Yoruba: 2.3%, African American: 8.3% |
[22] |
|
| ||||||
| Africa | Systematic analysis | 2012 | 57.1% > 50 years | 26.9% > 50 years | 2.4% > 50 years | [23] |
|
| ||||||
| Middle East | Wadi Ara study | 2002 | 20.5% among the elderly | 22.0% among the elderly | — | [24] |