Figure 3. Kaplan-Meier curve for VA/death
Patients partitioned by: R2I2<1.03 and PERS<1.21 / either R2I2≥1.03 or PERS≥1.21 / both R2I2≥1.03 and PERS≥1.21 (p<0.05, log rank).
Figure 4. Receiver operating characteristic curve for Regional Restitution Instability Index (R2I2), Peak Electrocardiogram Restitution Slope (PERS) and both parameters combined .
VA/death versus event free survival. (Area under curve: PERS = 0.61, R2I2=0.70, R2I2+PERS=0.71).
Figure 1. Example QTp/TpQ plots for 4 patients .