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ROC analysis for markers with mass at zero.
The receiver operating characteristic (ROC) curve and in particular the area under the curve (AUC) is commonly used to examine the discriminatory ability of diagnostic markers. Certain markers while basically continuous and non-negative have a positive probability mass (spike) at the value zero. We discuss a flexible modelling approach to such data and contrast it with the standard non-parametr...
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ژورنال
عنوان ژورنال: Statistics in Medicine
سال: 2006
ISSN: 0277-6715,1097-0258
DOI: 10.1002/sim.2301