Table 2. Conventional echocardiography parameters of the derivation set.
| Variable | HFpEF group (n=49) | Control group (n=46) | P value |
|---|---|---|---|
| LAd (mm) | 39.22±4.31 | 36.34±3.48 | 0.001 |
| E/A | 0.77 (0.62–0.87) | 1.31 (1.24–1.40) | <0.001 |
| The average E/e' | 15.26 (13.25–16.94) | 6.43 (5.15–7.65) | <0.001 |
| IVSd (mm) | 11.02±1.18 | 8.96±1.08 | <0.001 |
| LVPWd (mm) | 10.72±1.35 | 8.92±1.41 | <0.001 |
| RWT (mm) | 0.46±0.05 | 0.39±0.06 | <0.001 |
| LVMI (g/m2) | 109.90±17.52 | 84.64±17.77 | <0.001 |
| LVEDd (mm) | 47.00±2.92 | 45.87±3.01 | 0.07 |
| EDV (mL) | 104.63±13.84 | 99.89±14.39 | 0.11 |
| ESV (mL) | 40.61±7.92 | 38.33±7.23 | 0.15 |
| LVEF (%) | 60.18±4.04 | 61.46±3.66 | 0.11 |
Data are expressed as the mean ± SD or M (P25–P75). HFpEF, heart failure with preserved ejection fraction; LAd, left atrial diameter; E/A, the ratio of mitral valve peak early to late diastolic filling velocity; E/e', the ratio of early mitral inflow velocity to mitral annular early diastolic velocity; IVSd, interventricular septal thickness in diastole; LVPWd, left ventricular posterior wall thickness in diastole; RWT, relative wall thickness; LVMI, left ventricular mass index; LVEDd, left ventricular end-diastolic diameter; EDV, end-diastolic volume; ESV, end-systolic volume; LVEF, left ventricular ejection fraction.