Table 1 ECG parameters used in this study

Parameters available in MUSE database system: 639 parameters

Parameters used for analysis: 438 parameters

(1) Non-lead-specific parameters: 6 parameters

P-R Interval, P axis, QRS Duration, QTc Calculation (QTc Bazett), R axis, T axis

(2) Lead-specific parameters: 432 [36 × 12 leads] parameters

ST at J Point, P Area, P′ Area, P Area (Full), P Peak Time, P′ Peak Time, P Peak Amplitude, P′ Peak Amplitude, P Duration, P′ Duration, QRS Area, Q Area, Q Peak Amplitude, Q Duration, R Area, R′ Area, R Peak Time, R Duration, R′ Duration, S Area, S′ Area, S Peak Time, S Duration, S′ Duration, T Area, T′ Area, T Area (Full), T Peak Time, T Peak Amplitude, T′ Peak Amplitude, T Duration, T′ Duration, Minimum ST level, Max R Amplitude, Maximum ST level, Max S Amplitude

Parameters excluded: 201 parameters

(1) Non-lead-specific parameters: 9 parameters

P Onset, P Offset, QRS Count, QTc Framingham, QTc Fridercia, Q-T Interval, Q Onset, Q Offset, T Offset

(2) Lead-specific parameters: 192 [16 × 12 leads] parameters

P Onset Amplitude, QRS Balance, QRS Deflection, QRS Intrinsicoid, Q Peak Time, R′ Peak Time, R Peak Amplitude, R′ Peak Amplitude, S′ Peak Time, S Peak Amplitude, S′ Peak Amplitude, T′ Peak Time, T End, ST at End ST, ST at Mid ST, Special T