Table 1 Characteristics of the cohort at baseline

Age, years

79.7 ± 7.3

Women, n (%)

704 (74.2)

White non-Hispanic, n (%)

837 (88.2)

Education, years

14.5 ± 3.2

MMSE^b, marks out of 30

27.9 ± 2.0

Global Cognition, composite

0.11 ± 0.53

Body mass index

27.7 ± 5.31

Physical activity, hours/week

3.2 ± 3.53

Existing illnesses, %

   Myocardial infarction

11.3

   Congestive heart failure

5.2

   Claudication

6.7

   Diabetes

13.7

   Smoking

40.3

   Hypertension

58.5