Figure 1. Flowchart of the study sample.

af-PWV, aorta-femoral pulse wave velocity; CVD, cardiovascular disease; #, CVD from baseline to follow-up, including arteritis, angina pectoris, angioplasty, blockage in ventricle, bypass surgery, congenital heart disease, congestive cardiac failure, enlarged left ventricle, heart murmur, heart attack, mitral valve prolapse, mitral valve stenosis, stroke, tachyarrhythmia, ventricular arrhythmia, valve replacement, and unspecified mitral disease.