Table 5.

Prevalence of dementia among illiterate and literate subjects in Latin American studies

	ILLITERATE			LITERATE
COUNTRY	DEM. N	TOTAL	PREVALENCE %; (95% CI)	DEM. N	TOTAL	PREVALENCE %; (95% CI)	P
Cuba	128	355	36.06 (31.06–41.30)	1371	17 996	7.62 (7.23–8.03)	<0.0001
Chile	39	775	5.03 (3.60–6.82)	58	1438	4.03 (3.07–5.18)	0.2735
Brazil1	68	567	11.99 (9.41–14.93)	49	1089	4.50 (3.36–5.92)	<0.0001
Venezuela	67	286	23.43 (18.61–28.77)	105	1054	9.96 (8.24–11.95)	<0.0001
Brazil2	40	192	20.83 (15.35–27.22)	56	915	6.12 (4.66–7.86)	<0.0001
Peru	41	269	15.24 (11.16–20.07)	62	1263	4.91 (3.79–6.24)	<0.0001
Pooled data	383	2444	15.67 (14.21–17.18)	1701	23 755	7.16 (6.84–7.50)	<0.0001

Data from the Uruguay study (Ketzoian et al., 1997) and one Brazilian study (Ramos-Cerqueira et al., 2005) are not included.

Brazilian studies:

¹Herrera et al., 2002

²Bottino et al., 2008

CI = confidence interval; Dem. = dementia