This paper formulates a mathematical model for generating receiver operating characteristic (ROC) curves without underlying data. Credit scoring practitioners know that the Gini coefficient usually ...

No single biomarker for cancer is considered adequately sensitive and specific for cancer screening. It is expected that the results of multiple markers will need to be combined in order to yield ...

Binary test outcomes typically result from dichotomizing a continuous test variable, observable or latent. The effect of the threshold for test positivity on test sensitivity and specificity has been ...

In a sample of n individuals, suppose n 1 individuals are observed to have a certain condition or event. Let this group be denoted by C 1, and let the group of the remaining n 2 =n-n 1 individuals who ...