Fig. 3: Comparison of ECG and CDT-derived phenotypes of pathological individuals having FB or HF with their control counterparts.

Comparison of QRSd and CV (a and b) and QTc interval and delayed rectifier potassium conductance ‘\({{{G}}}_{{\rm{KrKs}}}\)’ (c and d) for groups of participants afflicted with FB or HF and non-afflicted counterparts. The centerline within each box represents the median (50th percentile), and the box bounds correspond to the interquartile range (IQR), with the lower and upper edges indicating the 25th and 75th percentiles, respectively. The whiskers extend to the minimum and maximum values within 1.5 times the IQR from the quartiles. The green dots indicate their means. The corresponding P values are from the two-sided Mann–Whitney U-test. *P < 0.05; **P < 0.01; ***P < 0.001; ****P < 0.0001. NS, not significant.