Quantitative variables are shown as mean (standard deviation).
Qualitative variables are shown as absolute number (percentage).
AF/flutter: atrial fibrillation/flutter; AV block: atrioventricular
block; BMI: body mass index; COPD: chronic obstructive pulmonary
disease; eGFR: estimated glomerular filtration ratio by MDRD formula;
HbA1c: glycosylated hemoglobin; SBP: systolic blood pressure; TIA:
transitory ischemic attack.
Table 2: Clinical, laboratory and echocardiographic findings by cluster