Table 3.

Prevalence of dementia according to age (pooled data of eight Latin American studies from six countries) and comparison with a systematic review of dementia prevalence studies by Lopes et al. (2002;2007)

	LA STUDIES				SYSTEMATIC REVIEW
AGE	N (STUDIES)	DEMENTIA (N)	PARTICIPANTS (N)	PREVALENCE (%) (95% CI)	N (STUDIES)	PREVALENCE (%) (95% CI)
65–69	8	238	9902	2.40 (2.11–2.72)	17	1.2 (0.8 – 1.5)
70–74	8	276	7725	3.56 (3.18–4.00)	19	3.7 (2.6 – 4.7)
75–79	8	428	6110	7.04 (6.41–7.69)	21	7.9 (6.2 – 9.5)
80–84	8	482	4058	11.88 (10.87–12.91)	20	16.4 (13.8 – 18.9)
85–89	6	463	2204	20.20 (18.62–21.78)*	16	24.6 (20.5 – 28.6)
90–94	6	294	890	33.07 (29.98–36.20)*, †	6	39.9 (34.4 – 45.3)
> 95	–			–	6	54.8 (45.6 – 63.9)

CI = confidence interval.

^*For the Chilean study (Albala et al., 1997) and one Brazilian study (Herrera et al., 2002), only data for subjects up to 84 years old were included.

^†Prevalence in the 90 years or over age group.