The area under the curve.
The predictor values of the cases, in input order (missing values removed).
The predictor values of the controls, in input order (missing values removed).
The direction used (the one chosen by "auto", or the one given).
The control and the case level, as strings (["0", "1"] for the { controls, cases } form).
The sensitivity at each threshold (from 1 down to 0).
The specificity at each threshold (from 0 up to 1).
The thresholds, from -Infinity up to Infinity for direction "<" and down from Infinity for ">": the
midpoints between consecutive distinct values of the predictor.
R's warnings, each once, in R's order (an empty array when there are none).
A ROC curve: the result of roc, as pROC's
rocobject.