Figure 5
From: Physiologic heart rate dependency of the PQ interval and its sex differences
The panels on the top row show the cumulative distribution of subject-specific curvilinear PQ/RR curvatures (the left panel) and of the subject-specific curvilinear QT/RR curvatures (the right panel). The curves of the red and blue lines correspond to the distributions in females and males, respectively. The panels on the middle row show comparisons of the curvatures between females (red circles with red error bars) and males (blue squares with blue error bars) in sub-populations defined by the source clinical centre of the study (see the text for details). The graphs show medians and inter-quartile ranges, the sizes of the marks indicate the numbers of subjects in the sub-populations. The panels of the bottom row show the scatter diagrams of the regression curvatures against the ages of the study subjects. The red/pink circles correspond to females, the blue/azure squares to males. In each panel, the solid red and solid blue lines show the linear regressions between the curvature values and ages in females and males, respectively. The red shaded and blue shaded areas are the 95% confidence intervals of the regression lines; the violet areas are the overlaps between the confidence intervals of the sex-specific age-regressions.
