Table 2. Incidence rates of Alzheimer’s disease in individuals 60 years and older in Wales.

Year	Incidence rate (per 1000 person-years)	Rate ratio (RR)	CI	p value
1999	1.4	Reference
2000	1.0	0.7	0.7-0.8	<0.001
2001	1.3	1.0	0.9-1.0	0.285
2002	1.7	1.2	1.1-1.3	<0.001
2003	1.4	1.0	0.9-1.1	0.710
2004	1.8	1.3	1.2-1.5	<0.001
2005	1.7	1.2	1.1-1.3	<0.001
2006	1.5	1.1	1.0-1.2	0.014
2007	1.9	1.4	1.3-1.5	<0.001
2008	1.5	1.1	1.0-1.2	0.005
2009	1.8	1.3	1.2-1.4	<0.001
2010	1.9	1.3	1.2-1.4	<0.001

CI: Confidence Interval