Figure 1 Kaplan–Meier survival curves for patients with chronic atrial fibrillation
a Event-free rate of heart failure hospitalisation for patients with REF (LVEF < 50%) and those with PEF (LVEF ≥ 50%).b Event-free rate of heart failure hospitalisation for patients with LVEDP ≤ 15 mmHg and those with LVEDP > 15 mmHg. LVEDP=left ventricular end-diastolic filling pressure, LVEF=left ventricular ejection fraction; PEF=preserved ejection fraction; REF=reduced ejection fraction.