Table 1: Demographics and echocardiographic characteristics of the study populations.

HyperGEN (N = 1,934) GENOA (N = 1,090) P*
Age, years 46.3 ± 13.2 61.8 ± 10.1 < 0.0001
Female, % 63.10% 71.30% < 0.0001
Body mass index, kg/m2 32.0 ± 7.7 31.6 ± 6.6 0.13
Centers in Alabama, % 75.20% 0% < 0.0001
Hypertension, % 65.70% 82.30% < 0.0001
Diabetes, % 20.10% 30.50% < 0.0001
Left ventricular traits
Left ventricular mass, g 170.2 ± 49.4 160.0 ± 44.6 < 0.0001
Left ventricular internal dimension-diastole, cm 5.2 ± 0.5 5.2 ± 0.5 0.99
Relative wall thickness 0.34 ± 0.06 0.32 ± 0.05 0.003
Fractional shortening, % 33.3 ± 5.5 32.9 ± 4.6 0.003
The ratio of left ventricular transmitral early velocity to late/atrial velocity 1.2 ± 0.5 1.1 ± 0.38 < 0.001
Left atrial dimension, cm 3.4 ± 0.5 3.6 ± 0.5 < 0.001

*Numeric variables were presented as mean ± SD, categorical variables were presented as percentages. Significance determined using Chi-square test for categorical and two independent sample t-test for continuous.