On the subject of sensitivity & specificity (mentioned in a recent message on r-help)...is there any R code available for the construction of ROC curves, calculation of areas under the curve, comparisons of curves etc.? Peter Hudson Principal Biochemist Maelor Hospital Wrexham, N.Wales peter_r_hudson at yahoo.com __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._