Fig. 4From: Improvement of left ventricular ejection fraction in revascularized postmyocardial patients: indication for statistical fallacyScatter plot: axes of Fig. 3 are rotated by 45%. Differences of follow-up and baseline LVEF measurements (ordinate) are plotted vs. averages (abscissa) analogous to Bland–Altman plots. avg averageBack to article page