Figure 1. Standardised mean differences (SMDs) of the covariates used for propensity score modelling before and after inverse probability of treatment weighting (IPTW) adjustment for comparisons of SAV versus IAV (A) and SEV versus BEV (B).

After adjustment, all covariates showed SMDs within the 10% cut-off (dashed vertical lines), except AV annular perimeter in the SEV versus BEV comparison (−11.2%).AV: aortic valve; BEV: balloon-expandable valve; BMI: body mass index; CAD: coronary artery disease; COPD: chronic obstructive pulmonary disease; IAV: intra-annular valve; ICD: implantable cardioverter-defibrillator; LVEF: left ventricular ejection fraction; NYHA: New York Heart Association; PM: pacemaker; SAV: supra-annular valve; SEV: self-expanding valve; STS-PROM: Society of Thoracic Surgery Predicted Risk of Mortality