How common is a perfect diagnostic measure (100% Sens, Spec, PPV, NPV, AUC)?

I've performed analyses on a series of variables, 3 of which yielded 100% sensitivity, 100% specificity, 100% positive predictive value, 100% negative predictive value, AUC of 1.0 (1.0,1.0). I did...

28 August 2015 7,356 6 View