Hi all,

I am new to ROC curves. My only experience is using them to examine tests for a specific disease, however I wonder if my plans below are an acceptable use for ROC curves..

My data is as such:

Days on dialysis (kidney replacement) (days; and categorised into zero, <1 week of dialysis, >1 week dialysis)
Survival greater than 1 year (yes/no)

I'd be very grateful if someone can advise whether my scenario is compatible with a ROC curve.

Many thanks, David