Table 1.
Baseline Characteristics (N=13,688)
| Characteristic | White (n=8,611) | Black (n=5,077) | P-value* |
|---|---|---|---|
| Age, mean (SD), years | 63 (8.5) | 63 (8.3) | <0.001 |
| Male (%) | 4,165 (48) | 1,842 (36) | <0.001 |
| Region | |||
| Stroke belt (%) | 2,919 (34) | 1,715 (34) | |
| Stroke buckle (%) | 1,928 (22) | 985 (19) | |
| Non-belt (%) | 3,764 (44) | 2,377 (47) | <0.001 |
| Income, <$20,000 (%) | 695 (8.1) | 1,036 (20) | <0.001 |
| No regular exercise (%) | 2,428 (28) | 1,709 (34) | <0.001 |
| Ever smoker (%) | 4,358 (51) | 2,592 (51) | 0.62 |
| Diabetes (%) | 1,002 (12) | 1,253 (25) | <0.001 |
| Systolic blood pressure, mean (SD), mm Hg | 124 (15) | 129 (16) | <0.001 |
| Hypertension (%) | 3,898 (45) | 3,423 (67) | <0.001 |
| Body mass index, mean (SD), kg/m2 | 28 (5.4) | 31 (6.4) | <0.001 |
| Obesity (%) | 2,662 (31) | 2,509 (49) | <0.001 |
| Total cholesterol, mean (SD), mg/dL | 193 (38) | 194 (40) | 0.23 |
| HDL cholesterol, mean (SD), mg/dL | 52 (16) | 54 (16) | <0.001 |
| LDL cholesterol, mean (SD), mg/dL | 113 (33) | 118 (35) | <0.001 |
| Dyslipidemia (%) | 5,028 (58) | 2,659 (52) | <0.001 |
| Aspirin (%) | 3,844 (45) | 1,868 (37) | <0.001 |
| Left ventricular hypertrophy (%) | 468 (5.4) | 644 (13) | <0.001 |
| Cardiovascular disease (%) | 1,295 (15) | 729 (14) | 0.28 |
*
Statistical significance for categorical variables tested using the chi-square method and for continuous variables the student’s t-test was used.
HDL=high-density lipoprotein; LDL=low-density lipoprotein; SD=standard deviation.