I'm currently working on the 2000 breast cancer dataset:
There is a last_follow_up_status column in the phenotype data. The four levels of this factor are:
a d d-d.s. d-o.c. null
Since I cannot find out any description of this column in their supplementary information, I have to make a guess.
I think 'a' should be alive and 'd' should be dead. But what does 'd-d.s.' and 'd-o.c.' mean? Can anyone help me make a guess?