In non-LBBB patients with normal PR , CRT-D therapy was associated with a trend toward an increased risk of heart failure/death ( hazard ratio , @ ; @ % confidence interval , @-@ @ ; P = @ ; interaction P < @ ) and a more than @-fold higher mortality ( hazard ratio , @ ; @ % confidence interval , @-@ @ ; P = @ ; interaction P < @ ) compared with implantable cardioverter defibrillator therapy .