FIGURE 2.

Estimated 1st hybrid PC ${\widehat{\xi }}_1$ of the Emory renal study data. The top panel represents the functional part of the estimated 1st hybrid PC: ${\widehat{\psi }}_1^{(1)}$ (left; baseline) and ${\widehat{\psi }}_1^{(2)}$ (right; post-furosemide. The middle panel plots the mean functions (solid line) and the effects of adding (+) and subtracting (−) a suitable multiple of ${\widehat{\psi }}_1^{(1)}$ (left) and ${\widehat{\psi }}_1^{(2)}$ (right). The bottom panel is the barplot for the vector part of the estimated 1st hybrid PC θ₁. [Colour figure can be viewed at wileyonlinelibrary.com]