Table 4 Intra-patient Spearman’s (\(\rho\)) and Pearson’s (r) correlation coefficients between \(\Delta [K^{+}]\), and time-warping based markers, and \(T_{w}\) and \(T_{S/A}\), in all cases evaluated from the first PCA transformed lead, and from standard single leads II, V3, V4, V5 and V6. Values are expressed as median (IQR).
Spearman’s (\(\rho\)) | Pearson’s (r) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PCA | II | V3 | V4 | V5 | V6 | PCA | II | V3 | V4 | V5 | V6 | |
\(d_{w}^{u}\) | 0.90 (0.37) | 0.90 (0.40) | 0.86 (0.50) | 0.90 (0.38) | 0.90 (0.25) | 0.90 (0.29) | 0.92 (0.36) | 0.91 (0.37) | 0.85 (0.37) | 0.86 (0.41) | 0.92 (0.14) | 0.86 (0.30) |
\(d_{w}\) | 0.82 (0.45) | 0.90 (0.37) | 0.90 (0.49) | 0.90 (0.46) | 0.90 (0.30) | 0.90 (0.39) | 0.89 (0.35) | 0.90 (0.26) | 0.88 (0.31) | 0.86 (0.39) | 0.93 (0.11) | 0.87 (0.29) |
\({\hat{d}}_{w,c}\) | 0.90 (0.31) | 0.82 (0.28) | 0.86 (0.40) | 0.90 (0.50) | 0.90 (0.30) | 0.90 (0.38) | 0.89 (0.25) | 0.87 (0.33) | 0.89 (0.29) | 0.86 (0.49) | 0.91 (0.17) | 0.86 (0.27) |
\(d_{w}^{\mathrm{NL}}\) | 0.82 (0.57) | 0.43 (0.60) | 0.70 (0.45) | 0.67 (0.60) | 0.70 (0.64) | 0.80 (0.56) | 0.68 (0.52) | 0.47 (0.58) | 0.61 (0.47) | 0.56 (0.45) | 0.56 (0.64) | 0.61 (0.47) |
\(d_a\) | 0.21 (1.20) | 0.00 (1.22) | 0.50 (0.80) | 0.40 (1.45) | 0.45 (1.59) | − 0.10 (1.15) | 0.57 (1.53) | 0.14 (1.55) | 0.83 (0.67) | 0.63 (1.71) | 0.62 (1.65) | − 0.32 (1.52) |
\(d_{a}^{\mathrm{NL}}\) | 0.80 (0.42) | 0.65 (0.70) | 0.70 (0.59) | 0.70 (0.77) | 0.86 (0.45) | 0.87 (0.40) | 0.75 (0.39) | 0.82 (0.83) | 0.66 (0.56) | 0.68 (0.84) | 0.88 (0.30) | 0.84 (0.38) |
\(T_{w}\) | − 0.70 (0.59) | − 0.84 (0.57) | − 0.90 (0.52) | − 0.75 (0.67) | − 0.80 (0.63) | − 0.90 (0.65) | − 0.92 (0.32) | − 0.85 (0.35) | − 0.87 (0.40) | − 0.81 (0.62) | − 0.84 (0.44) | − 0.75 (0.48) |
\(T_{S/A}\) | 0.80 (0.42) | 0.62 (0.80) | 0.60 (0.85) | 0.46 (1.07) | 0.76 (0.59) | 0.63 (0.69) | 0.86 (0.38) | 0.83 (0.77) | 0.71 (0.65) | 0.46 (0.83) | 0.74 (0.45) | 0.72 (0.52) |
