Figure 9
From: Concept of a Radiofrequency Device for Osteopenia/Osteoporosis Screening
Blue - maximum Youden’s J index for every center frequency of the moving 0.1 GHz band using the index given by Eq. (3) with radiofrequency measurements. Average transmission coefficient for both wrists is used. Straight horizontal lines show Youden’s J index for the simple indicator \({D}_{0}\) given by Eq. (1) and its modification \({D}_{0{\rm{mod}}}\) from Eq. (7).
