I am doing Cox regression models and KM plots for a data set where the end point is death. In addition there is information about whether the death was cancer-specific or not. So I have three categories:
- No death, last seen is the date of censor
- Death - cancer-specific
- Death - other cause
What I would like to know is what to do with category 3 data when I am looking at cancer-specific survival as my endpoint. Do I censor that data at the date of death OR do I just remove that data from the dataset?