End points and variables tested by multiple logistic regression
| End points |
| Restenosis (Doppler peak gradient ⩾ 70 mm Hg) |
| Aortic insufficiency (grade 3) |
| Cusp disruption |
| Need for surgery |
| Death |
| Valvoplasty failure (restenosis or significant insufficiency or need for surgery or death) |
| Tested variables |
| Aortic annulus diameter (z score) |
| Peak Doppler gradient |
| Balloon to annulus diameter ratio |
| Reverse doming (yes/no) |
| Cusps (unicuspid, anatomically bicuspid, functionally bicuspid, tricuspid) |
| Aortic insufficiency (grade < 1/grade ⩾ 1) |
| Left ventricular systolic pressure |
| Left ventricular end diastolic pressure |
| Systolic pressure in aorta |
| Left ventricular diastolic dimension |
| Left ventricular posterior wall |
| Left ventricular shortening fraction |
| Left ventricular fibroelastosis (yes/no) |
| Coarctation of the aorta (yes/no) |
| Mitral stenosis (yes/no) |
| Mitral insufficiency (grade ⩽ 2/grade > 2) |
| Age at valvoplasty |
| Sequential number of valvoplasty |
| Follow up period |