Furthermore, the damaged areas calculated from the single cut-off relative permittivity criteria were smaller than those determined by visual inspection.
In addition, the condition map based on the dual cut-off relative permittivity criteria showed a good agreement with the attenuation method, in comparison to that based on the conventional single cut-off relative permittivity criteria in Korea expressways.
Some institutions may define a single cut-off between normal and abnormal groups by considering previously collected data from both healthy and diseased individuals and balancing sensitivity and specificity.
Thus, an interesting future research direction would be to incorporate observed response times into the modelling of disengagement and define a continuous indicator for engagement rather than a single cut-off.
In addition, the condition map based on the dual cut-off relative permittivity criteria showed a good agreement with the attenuation method, in comparison to that based on the conventional single cut-off relative permittivity criteria in Korea expressways. .
However, some areas of lane 2 of span 3 of JB-3N, where damages were most concentrated, and some other areas in JB-3S, were not accurately classified as damaged areas by the current single cut-off relative permittivity criteria.
Although increasing age is accompanied by an increased risk of poor outcomes, there is no single cut-off for age but rather a continuum of gradually increasing risk [11 13].
Overall, the condition map based on the dual cut-off criteria (see Fig. 14b) appears to be more closely correlated with the visual inspection map than the condition map based on a single cut-off relative permittivity criteria (see Fig. 14a).
There is no way of knowing from the distribution alone which adults would be affected in this way therefore no single cut-off value can be derived.
GISTIC alone would have missed the second peak that may be important for a low frequency of high-amplitude gain, whereas a peak frequency approach using a single cut-off would also miss potentially important genes.
Add to the fact that a single cut-off point is easy to remember.
