of borderline significanceP ≤ 0.10
To identify independent factors associated with MR severity in patients with AF, stepwise logistic regression analysis was performed; variables found to be significant or of borderline significance by univariate analysis ( P ≤ 0.10), including duration of AF, LA volume, E/E’, AA, AC, annulus CW, AHCWR, AL surface area,PL surface area and leaflet tenting volume, were included in the equation.