Gender and Age Differences and the Trend in the Incidence and Prevalence of Dementia and Alzheimer’s Disease in Taiwan: A 7-Year National Population-Based Study
Table 1
Secular trends of overall incidence and prevalence rates of dementia and Alzheimer's disease (AD) in Taiwan, 2004–2010.
Variable
Incidence (per 1,000 person-years)
Change (%)
Trend test β
Prevalence rate (per 100 people)
Change (%)
Trend test β
Calendar year
Calendar year
2004
2005
2006
2007
2008
2009
2010
2004
2005
2006
2007
2008
2009
2010
Dementia
Crude
11.2
11.2
11.6
11.8
11.7
11.9
11.8
6.2
0.0105
<0.0001
5.0
5.7
6.4
7.1
7.8
8.4
9.1
82.0
0.0972
<0.0001
Adjusted
10.9
10.7
11.0
11.1
10.9
10.9
10.7
−1.8
−0.0012
0.9437
4.7
5.3
5.9
6.4
6.9
7.3
7.6
61.7
0.0784
<0.0001
AD
Crude
5.1
4.9
5.1
5.2
5.2
5.2
5.3
3.9
0.0076
<0.0001
2.4
2.7
3.0
3.3
3.6
3.9
4.2
75.0
0.0920
<0.0001
Adjusted
4.9
4.6
4.8
4.8
4.7
4.7
4.6
−6.1
−0.0069
0.7480
2.3
2.5
2.8
3.0
3.2
3.3
3.5
52.1
0.0696
<0.0001
Adjusted for age and sex. Change (%): percentage of changes in the incidence and prevalence rates of dementia or Alzheimer's disease AD between 2004 and 2010. for linear trend test <0.05.
