Figure 1.

Impedance vector displacements after 1 month, 3 months and 6 months with their 95% confidence ellipses. Impedance vector displacements (arrows) after 1 month (T1-T0), 3 months (T3-T0) and after 6 months (T6-T0) with their 95% confidence ellipses. The vector displacement after 6 months is significantly different from zero (P < 0.05, 95% confidence ellipse not overlapping zero), due to a decrease in both components R/H and Xc/H. R is resistance, Xc reactance, H height, and d difference with respect to the screening visit T0.