Baseline echocardiographic characteristics
| Aortic valve area, cm2 (SD) | 0.67 (0.18) |
| Peak aortic gradient, mm Hg (SD) | 81.9 (27.2) |
| Mean aortic gradient, mm Hg (SD) | 53.1 (20.1) |
| Left ventricular ejection fraction, % (SD) | 52.4 (12.2) |
| Right ventricular systolic pressure, mm Hg (SD) | 46.5 (15.10) |
| Mitral regurgitation grade, n (%) | |
| None | 20 (5.2) |
| 1 | 47 (12.3) |
| 2 | 209 (54.9) |
| 3 | 91 (23.9) |
| 4 | 14 (3.7) |
| Aortic regurgitation grade, n (%) | |
| None | 14 (3.7) |
| 1 | 85 (22.3) |
| 2 | 214 (55.9) |
| 3 | 60 (15.7) |
| 4 | 9 (2.4) |