Figure 3  .

Box plots showing lateral atrioventricular plane (AVP) contraction amplitudes in patients on placebo (all dilated cardiomyopathy, n = 12), in patients with ischaemic cardiomyopathy (IHD, all on open metoprolol, n = 6), and in patients with dilated cardiomyopathy (DCM) treated with metoprolol (open treatment, n = 9; double blind treatment, n = 14). Baseline (white boxes), six months follow up (grey boxes). The boxes encompass the 25th to the 75th centile, and the whiskers the 10th to the 90th centile. Dots denote values outside the 10th and 90th centiles. Solid lines in the boxes denote median values and dotted lines denote mean values.