Table I.
Characteristics of the study cohort by race-ethnicity.
| Overall N=760 |
Black N=117 |
Hispanic N=539 |
White N=104 |
P B vs. W |
P H vs. W |
P B vs. H |
|
|---|---|---|---|---|---|---|---|
| Age, years | 70.8±9.6 | 74.2±10.2 | 69.3±8.9 | 74.3±10.3 | 0.93 | <0.0001 | <0.0001 |
| Women, n (%) | 479 (63.0) | 80 (68.4) | 340 (63.1) | 59 (56.3) | 0.07 | 0.22 | 0.28 |
| Body mass index, kg/m2 | 28.2±4.8 | 27.8±4.7 | 28.6±4.7 | 26.5±5.0 | 0.04 | <0.0001 | 0.11 |
| Hypertension, n (%) | 543 (71.4) | 90 (76.9) | 388 (72.0) | 65 (62.5) | 0.02 | 0.05 | 0.28 |
| Diabetes, n (%) | 224 (29.5) | 30 (25.6) | 186 (34.5) | 8 (7.7) | 0.0004 | <0.0001 | 0.06 |
| Hypercholesterolemia, n (%) | 462 (60.9) | 62 (53.5) | 334 (62.0) | 66 (63.5) | 0.13 | 0.77 | 0.09 |
| Coronary artery disease, n (%) | 45 (5.9) | 8 (6.8) | 31 (5.8) | 6 (5.8) | 0.74 | 0.99 | 0.65 |
|
Anti-hypertensive treatment, n
(%) |
128 (16.8) | 29 (24.8) | 84 (15.6) | 15 (14.4) | 0.05 | 0.76 | 0.02 |
|
Education, high school or
higher, n (%) |
218 (28.7) | 58 (49.6) | 80 (14.9) | 80 (76.9) | <0.0001 | <0.0001 | <0.0001 |
| Echocardiographic variables | |||||||
| LV ejection fraction, % | 63.3±7.2 | 62.6±8.4 | 63.5±7.0 | 63.5±6.4 | 0.39 | 0.99 | 0.26 |
| LVMI, g/m2 | 103.8±26.2 | 103.4±29.3 | 104.3±25.4 | 101.4±26.8 | 0.61 | 0.29 | 0.74 |
| Relative wall thickness | 0.50±0.09 | 0.51±0.10 | 0.50±0.08 | 0.50±0.10 | 0.29 | 0.81 | 0.09 |
|
Left atrial diameter/BSA,
mm/m2 |
22.2±3.1 | 21.7±3.3 | 22.4±3.0 | 22.1±3.2 | 0.36 | 0.38 | 0.03 |
| Heart rate, bpm | 69.9±11.3 | 68.4±11.8 | 70.8±11.3 | 67.4±10.5 | 0.48 | 0.004 | 0.05 |
LVMI: Left Ventricular Mass Index. BSA: Body surface area. B: Black. H: Hispanic. W: White. Anti-hypertensive treatment includes beta-blockers and/or ace-inhibitors and/or diuretics