Fig. 3From: His-Purkinje system pacing versus biventricular pacing in clinical efficacy: a systematic review and meta-analysisForest plot of mean difference (MD) of cardiac resynchronization therapy (CRT) on QRS duration (QRSd) decrease in different groups. Net changes in QRSd were estimated by comparing BVP with HPSP. Squares indicate the effect size of a study, with a 95% CI; and diamonds indicate the overall effect size of all studies combinedBack to article page