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iobj
2011 Apr 27
2
ROCR for combination of markers
Dear list
I have 5 markers that can be used to detect an infection in combination. Could you please advise me how to use functions in ROCR/ other package to produce the ROC curve for a combination of markers?
I have used the following to get ROC statistics for each marker.
pred <- prediction(y$marker1, y$infectn)
perf <-performance(pred,"tpr","fpr")