Intraventricular dyssynchrony was more frequent in the inflow tract group than in the mid-septum group ( 85 % vs 32.5 % , respectively ; odds ratio [ OR ] , 9.15 ; P = 0.02 ) as was interventricular dyssynchrony ( 37.5 % vs 17.5 % , respectively ; OR , 2.83 ; P < 0.01 ) .