Table 1

Baseline characteristics of the study population (N=1197)

CharacteristicsNumberMean ± SD or percentage
Number of patients1197
Mean age (year)119782 ± 2.8
Mean number of months of follow-up (months)1197128 ± 7.9
Gender (%)
 Male47139.4%
 Female72660.7%
Diagnoses (%)
 Atrial fibrillation19716.5%
 Diabetes46438.8%
 Malignancy18615.5%
 Coronary artery disease38932.5%
 Hypertension58348.7%
Indication of echocardiography (%)
 Coronary artery disease20016.7%
 Post-myocardial infarction/coronary33227.7%
Revascularization
 Preoperative13010.8%
 Heart failure29724.8%
 Others23819.8%
LVEF
 <45%24620.45%
 >45%95179.55%
E/e′ by LVEF groups
 Group 1: E/e′ <15 and LVEF ≥45%57147.7%
 Group 2: E/e′ <15 and LVEF <45%20517.1%
 Group 3: E/e′ ≥15 and LVEF ≥45%38031.8%
 Group 4: E/e′ ≥15 and LVEF <45%413.4%
E/e′ by quartiles
 1st quartile: ≤13.230325.3%
 2nd quartile: 13.2–17.229624.7%
 3rd quartile: 17.2–23.730025.1%
 4th quartile: ≥23.729824.9%
 Loss to follow-up352.9%
 Events31426.2%
  • E/e′, early transmitral flow velocity (E) to early diastolic mitral annulus velocity (e′); LVEF, left ventricular ejection fraction.