Table 2.

Sample characteristics

Variable	Mean (SD)	Median	Min	Max
Entire Sample (n=1019)
Age at recruitment	78 (6.6) years	78	46	100
Length of follow up	5.0 (3.3) years	3.6	1	16
Education	13 (3.0) years	13	4	20
# of family members	8.4 (3.5)	8	2	26
% of family with dementia	8.8 (14.3)	0	0	75
35% of sample with positive family history (n=359)
# of family members	8.9 (3.8)	8	2	26
% of family with dementia	25 (13.5)	20	6	75

Note. Family history was calculated as the percentage of the patient's parents and siblings with a history of cognitive impairment or dementia.