Figure 5.

(A) Box and whisker plot displaying paired endocardial and epicardial scar pattern, and their association to endocardial subtracted by epicardial ARI (ΔARI), endocardial subtracted by epicardial RT (ΔRT) during endocardial pacing (B) and epicardial pacing (C). Scar tissue characteristic is denoted on the x-axis, the first letter is the characteristic of the endocardium and the second letter is the characteristic of the epicardium. Statistical significance is assessed as a comparison against normal endocardial and epicardial tissue (n_n), with statistical significance denoted above the boxplot. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001. ARI, activation recovery interval; b, scar borderzone; d, dense scar; n, normal tissue; NS, non-significant; RT, repolarization time.