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Table 4 Linear regressions of all ECG parameters for a 3 month-MI rabbit evolution grouped by leads

From: The allometric model in chronic myocardial infarction

Lead Parameter β (Mean ± SD) δ (Mean ± SD) r p-value
L3 QT 3.464 ± 1.072 3.494 ± 0.8387 0.78 0.0145
L2 TA −2.474 ± 0.7736 −3.593 ± 0.5926 0.77 0.0151
L1 STA 1.832 ± 0.5997 0.06115 ± 0.4994 0.75 0.0185
L1 QTFRA 0.1042 ± 0.03840 2.462 ± 0.03198 0.72 0.0300
L3 TPE 2.303 ± 0.9132 3.087 ± 0.7142 0.69 0.0397
L1 QTFRI 0.1691 ± 0.06926 2.456 ± 0.05769 0.68 0.0447
L1 QTMA 0.1918 ± 0.07858 2.346 ± 0.06545 0.68 0.0447
L1 QTB 0.1384 ± 0.0617 2.531 ± 0.05142 0.64 0.0600
L3 QA −0.6352 ± 0.2849 −0.8878 ± 0.2228 0.64 0.0610
L3 SA 1.202 ± 0.6668 0.03635 ± 0.5215 0.55 0.1145
L2 PD 1.011 ± 0.5893 1.510 ± 0.4514 0.54 0.1299
L1 QRSA 1.210 ± 0.7190 0.2376 ± 0.5988 0.53 0.1362
L3 QRSD 0.5699 ± 0.3995 1.566 ± 0.3124 0.47 0.1968
L1 RR 0.5025 ± 0.3669 2.675 ± 0.3056 0.45 0.2131
L2 PR −0.7553 ± 0.7338 0.3425 ± 0.5621 0.36 0.3376
L1 RA 0.7621 ± 0.7972 0.09869 ± 0.6639 0.34 0.3709
L3 JT 0.5296 ± 0.6854 1.821 ± 0.5360 0.26 0.4650
L3 QTHO 0.1448 ± 0.3730 2.350 ± 0.2917 0.14 0.7095
  1. β: slope of linear regression, δ: Y-intercept when X = 0 of linear regression, r: correlation coefficient, p-value: statistical significance of linear fit. L1: Lead I, L2: Lead II, L3: Lead III, QTFRA: Framingham correction formula, QTMA: Matsunaga correction formula, QTB: Bazett correction formula, QTFRI: Fridericia correction formula, QTHO: Hodges correction formula, QT: QT interval, TA: amplitude of T-wave, STA: amplitude of ST segment deviation, TPE: time from peak to end of the T-wave, QA: amplitude of Q-wave, SA: amplitude of S-wave, RA: amplitude of R-wave, QRSA: amplitude of QRS complex, QRSD: duration of QRS complex, RR: RR interval, PR: PR interval, JT: JT interval.