|Log Aortic Arch PWV||Log Zc||Pulse Pressure|
|Regression Coefficient∗||Standard Error||p Value||Regression Coefficient||Standard Error||p Value||Regression Coefficient∗||Standard Error||p Value|
|Black vs. White ethnicity||0.104||0.015||<0.0001||0.152||0.017||<0.0001||2.6||0.48||<0.001|
|Hispanic vs. White ethnicity||0.051||0.021||0.017||0.074||0.024||0.002||1.4||0.67||0.037|
|Black vs. Hispanic ethnicity||0.054||0.20||0.007||0.078||0.022||0.0005||1.2||0.63||0.058|
BMI = body mass index; PWV = proximal aortic pulse wave velocity; Zc = characteristic impedance.
↵∗ Exponentiation of the regression coefficient values indicates fold difference in the variables between each ethnicity. For example, a coefficient of 0.104 indicates that aortic arch PWV is 11% higher in Blacks than Whites (i.e., e0.104 = 1.11 = the fold higher in blacks as compared to whites). Multivariable models of log-transformed aortic arch PWV, Zc, and Pulse Pressure, after adjustment for age, age squared, sex, BMI, height, mean arterial blood pressure, antihypertensive treatment, heart rate, total cholesterol, diabetes mellitus, and cigarette smoking. The regression coefficient is in reference to the 2 ethnicity variables.