Re: [R] ROC Curve: negative AUC

Thanks, Do you know how to correct it? Cheers, Bruno -- View this message in context: http://r.789695.n4.nabble.com/ROC-Curve-negative-AUC-tp4650469p4650530.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org

[R] ROC Curve: negative AUC

Hi all, does anyone know why the area under the curve (AUC) is negative? I'm using ROC function with a logistic regression, package Epi. First time it happens... Thanks a lot! Bruno -- View this message in context: http://r.789695.n4.nabble.com/ROC-Curve-negative-AUC-tp4650469.html Sent

Re: [R] ROC Curve: negative AUC

wrong direction for ranking On Thu, Nov 22, 2012 at 1:58 PM, brunosm brunos...@gmail.com wrote: the area under the curve (AUC) is negative? I'm using ROC function with a logistic regression, package Epi. First time it happens... Thanks a lot! Bruno -- ==

Re: [R] ROC Curve: negative AUC

On Fri, Nov 23, 2012 at 7:58 AM, brunosm brunos...@gmail.com wrote: Hi all, does anyone know why the area under the curve (AUC) is negative? I'm using ROC function with a logistic regression, package Epi. First time it happens... Have you looked at the ROC curve? That should tell you