Disease free survival - DFS

In order to analyze survival time and disease-free survival time, the
following variables are needed:

Dfsevent has the value 1 if the patient died or relapsed, 0 otherwise.

Dfstime is the time, in months, from surgery to death or relapse if either occurred.
Otherwise, it is the time that the patient was observed after surgery.

Survevent has the value 1 if the patient died, 0 otherwise.

Survtime is the time, in months, from surgery to death if the patient died. Otherwise, it is the
time that the patient was observed after surgery.



support.sas.com/publishing/pubcat/chaps/58416.pdf
support.sas.com/publishing/pubcat/chaps/55504.pdf

or in dropbox


In FDA:
http://www.google.com.sg/url?sa=t&rct=j&q=definition%20of%20disease-free%20survival&source=web&cd=8&cad=rja&ved=0CEwQFjAH&url=http%3A%2F%2Fwww.fda.gov%2Fdownloads%2FDrugs%2FGuidanceComplianceRegulatoryInformation%2FGuidances%2Fucm071590.pdf&ei=DY08UMzjJY-3rAeahIG4BA&usg=AFQjCNEe0Mi0RyMYfk8POmoLrJl0lS1r2w&sig2=pOqOro76BC_HG9mI4Xz9mQ