Table 2.

Numbers of subjects in each performance group

	Good Performance		Intermediate Performance		Poor Performance
Age Group	Total	Dementia (AD)	Total	Dementia (AD)	Total	Dementia (AD)
1992
70–74	499	0 (0)	39	0 (0)	54	6 (3)
75–79	328	0 (0)	35	2 (1)	54	10 (6)
80–85	195	1 (1)	35	3 (2)	59	22 (20)
85+	127	0 (0)	21	0 (0)	54	18 (15)
Total	1149	1 (1)	130	5 (3)	221	56 (44)
2001
70–74	699	0 (0)	42	3 (2)	37	9 (5)
75–79	503	0 (0)	39	3 (3)	50	9 (7)
80–84	248	0 (0)	19	2 (2)	41	13 (11)
85+	156	1 (1)	15	3 (3)	41	14 (14)
Total	1606	1 (1)	115	11 (10)	171	45 (37)