Table 1.
Demographic and health variables for the overall sample, and by SES
| Overall N=147 |
Low SES N = 63 |
High SES N = 84 |
||
|---|---|---|---|---|
| Variable | M (SD) or N (%) |
M (SD) or N (%) |
M (SD) or N (%) |
p |
| Age (years) | 52.1 (9.5) | 49.9 (9.3) | 53.7 (9.4) | 0.016 |
| Education (years) | 12.9 (3.2) | 11.0 (2.7) | 14.2 (2.8) | <.001 |
| Low Education (%) | 37 (25.1) | 37 (58.7) | 0.0 | |
| Below Poverty (%) | 43 (29.3) | 43 (68.3) | 0.0 | |
| Female (%) | 82 (55.8) | 42 (66.7) | 41 (48.8) | 0.042 |
| African American (%) | 85 (57.8) | 32 (50.8) | 30 (35.7) | 0.13 |
| Ever Smoker (%) | 104 (70.7) | 48 (76.2) | 56 (66.7) | 0.34 |
| Ever Alcohol Use (%) | 132 (89.8) | 55 (87.3) | 76 (90.5) | 0.57 |
| Hypertension (%) | 67 (45.6) | 32 (49.2) | 31 (36.9) | 0.12 |
| Diabetes (%) | 24 (16.3) | 10 (15.9) | 14 (16.7) | >.99 |
| CVD comorbidities (%) | 3 (2.0) | 3 (4.8) | 0.0 | 0.17 |
| Body mass index (kg/m2) | 30.2 (6.7) | 29.9 (7.2) | 30.5 (36.4) | 0.60 |
| Waist circumference (cm) | 103.5 (16.2) | 101.8 (17.5) | 104.7 (15.2) | 0.30 |
| Total cholesterol (mg/dl) | 188.2 (43.4) | 182.8 (38.5) | 191.7 (46.1) | 0.25 |
| Total brain volume (cc) | 975.6 (102.4) |
948.1 (87.9) | 996.1 (108.0) |
0.005 |
| Gray matter volume (cc) | 517.6 (54.7) | 504.3 (47.8) | 527.5 (57.6) | 0.011 |
| White matter volume (cc) | 458.0 (50.6) | 443.8 (43.6) | 468.6 (53.1) | 0.003 |
| White matter lesion volume (cc) | 2.1 (1.8) | 2.0 (2.0) | 2.2 (1.6) | 0.67 |
CVD comorbidities variable includes participants with any of the following: coronary artery disease, myocardial infarction, peripheral artery disease, and coronary artery bypass surgery.
t-tests were used to compare continuous variables; Fisher’s exact test was used to compare categorical variables.