Table 1.

Description of the study population

Variables	n	Mean (sd) or %
Education yrs	2779
<12		3
12		29
12–15		34
16+		34
Family income (1000 $)	2708
−39.9		22
40–59.9		23
60–74.9		19
75–99.9		16
100+		20
Married	2791	74
HDL-Cholesterol (mg/dl)	2730	50.0 (14.7)
Smoking	2792
Past smokers		28
Current smokers		18
Heavy drinking*	2788
Past heavy drinkers		16
Current heavy drinkers		2
Regular exercise*	2790	61
SF-36 mental score	2792	53.9 (8.0)
Diabetes prevalence*	2793	6
CVD history	2787	3
Hypertension*	2793	36
Hypertension medications	2788	22
Current use of Statins	2793	15
GPT (second)	2789	72.7 (18.3)
TMT-A (second)	2794	28.0 (10.5)
TMT-B (second)	2789	67.6 (33.0)
MMSE score	1261	28.7 (1.3)

^*Hypertension: diagnosed hypertension with current medications or a measured blood pressure ≥140/90 mmHg; diabetes: diagnosed diabetes or A1C>6.5; heavy drinking: four or more drinks daily; regular exercise: exercise enough to sweat at least once a week.