Table 1

Characteristics of the Total Study Sample and Healthy Reference Group

Healthy Reference Group (n = 433)Total Study Sample (n = 1,212)
Age (yrs)42.1 ± 11.448.5 ± 13.7
Male sex40.248.0
BMI (kg/m2)23.8 ± 2.326.2 ± 3.9
SBP (mm Hg)114 ± 12125 ± 19
DBP (mm Hg)75 ± 881 ± 11
Obese34.2
Hypertensive36.4
Current smoker28.928.1
Hypercholesterolemia68.776.7
Atrial fibrillation0.8
Cardiovascular disease1.2
Diabetes mellitus2.1
LV mass (g)137 ± 35160 ± 48
e/a ratio1.51 ± 0.531.28 ± 0.50
LA (M-mode) (mm)34 ± 437 ± 5
LA volume (ml)39 ± 1043 ± 14
LA volume/BSA (ml/m2)22 ± 523 ± 7
LA volume/height (ml/m)23 ± 626 ± 8

Values are mean ± SD or %.

BMI = body mass index; BSA = body surface area; DBP = diastolic blood pressure; e/a ratio = ratio of early to late transmitral flow velocities; LA = left atrial; LA (M-mode) = anteroposterior diameter of left atrium in parasternal long axis view; LA volume = volume of left atrium obtained in apical 4-chamber view; LV = left ventricular; SBP = systolic blood pressure.