[R] Confidence interval for Tau-a or c-index to compare logistic lrm (binary) models with each other.

Dear R list, How can confidence interval be derived for e.g. the Tau-a coefficient or the c index (area under ROC curve) such that I can compare the fitted lrm (logistic) models with each other. Is this possible? The aim is to conclude that one model is significantly better than other model (a,

Re: [R] Confidence interval for Tau-a or c-index to compare logistic lrm (binary) models with each other.

Jan Verbesselt wrote: Dear R list, How can confidence interval be derived for e.g. the Tau-a coefficient or the c index (area under ROC curve) such that I can compare the fitted lrm (logistic) models with each other. Is this possible? The aim is to conclude that one model is significantly better