[R] C-statistics (AUCs) from rcorr.cens or survcomp time-dependent ROC curves

From: North, Bernard V <b.north_at_imperial.ac.uk>
Date: Fri, 25 Mar 2011 14:40:31 +0000


I am using the rcorr.cens function from the Hmisc package and the time-dependent ROC curve obtained using tdrocc in the survcomp package.

I understand that the C statistic from rcorr.cens has to be subtracted from 1 if high values of the risk variable lower survival. Given that I wonder what the connection is between that C statistic and the AUC from the tdrocc object. Are they expected to be the same ? Many thanks in advance

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