Hi,
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
Christophe
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