HR, hazard ratio; CI, confidence interval; Pre, preoperative; RV, right ventricle; TR, tricuspid regurgitation; TV, tricuspid valve;
MR, mitral regurgitation. C-statistic 0.84 (model 1); C-statistic 0.80 (model 2)
Table 6. Comparison of preoperative echocardiographic data between functional and non-functional mitral regurgitation.