Table 1.

Group mean consensus estimates (SD) for prevalence of dementia (%) for each region and age-group

	Age-group (years)
	60–64	65–69	70–74	75–79	80–84	≥85
EURO A	0·9 (0·1)	1·5 (0·2)	3·6 (0·2)	6·0 (0·2)	12·2 (0·8)	24·8 (1·0)
EURO B	0·9 (0·1)	1·3 (0·1)	3·2 (0·3)	5·8 (0·3)	12·2 (0·3)	24·7 (2·3)
EURO C	0·9 (0·1)	1·3 (0·1)	3·2 (0·2)	5·8 (0·2)	11·8 (0·5)	24·5 (1·8)
AMRO A	0·8 (0·1)	1·7 (0·1)	3·3 (0·3)	6·5 (0·5)	12·8 (0·5)	30·1 (1·1)
AMRO B	0·8 (0·1)	1·7 (0·1)	3·4 (0·2)	7·6 (0·4)	14·8 (0·6)	33·2 (3·5)
AMRO D	0·7 (0·1)	1·5 (0·3)	2·8 (0·4)	6·2 (1·1)	11·1 (2·0)	28·1 (5·2)
EMRO B	0·9 (0·3)	1·8 (0·1)	3·5 (0·3)	6·6 (0·2)	13·6 (0·8)	25·5 (2·3)
EMRO D	1·2 (0·3)	1·9 (0·2)	3·9 (0·3)	6·6 (0·4)	13·9 (1·3)	23·5 (2·3)
WPRO A	0·6 (0·1)	1·4 (0·1)	2·6 (0·3)	4·7 (0·6)	10·4 (1·2)	22·1 (3·5)
WPRO B	0·6 (0·1)	1·8 (0·2)	3·7 (0·4)	7·0 (0·9)	14·4 (1·9)	26·2 (3·9)
SEARO B	1·0 (0·1)	1·7 (0·2)	3·4 (0·2)	5·7 (0·5)	10·8 (1·2)	17·6 (2·7)
SEARO D	0·4 (0·1)	0·9 (0·1)	1·8 (0·2)	3·7 (0·4)	7·2 (1·2)	14·4 (2·7)
AFRO D	0·3 (0·1)	0·6 (0·1)	1·3 (0·2)	2·3 (0·5)	4·3 (1·0)	9·7 (1·9)
AFRO E	0·5 (0·3)	1·0 (0·4)	1·9 (0·9)	3·8 (1·7)	7·0 (3·6)	14·9 (7·2)