[Rd] percent concordant function

From: christophe dutang <dutangc_at_gmail.com>
Date: Wed, 29 Oct 2008 13:14:38 +0100


I would like to compute ''SAS'' output statistic for logistic regression, namely the percent concordant, percent discordant, Sommer's D, Gamma, Tau-a...Actually, I'm very interested in percent concordant.

Since the function 'cor' with method kendall compute the kendall's tau, I'm wondering how can I use this function to get back the percent concordant?

Does anyone know if there is a package implementing those statistics? I look around on the web, but did not find anything useful.

Thanks in advance


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