Dear colleagues, I have a large survival data set of breast cancer patients who were treated with different therapies. Most of the patients were treated with more than one therapy. There are a lot of combinations of therapies in the data set. There is the hypothesis that not only the set of applied treatments but also the specific sequence and duration of the different treatments has a significant effect on an individual's survival time. Does anybody have an idea how to code the individual's set, sequence and duration of treatments as covariates in a survival model (maybe cox regression). Thanks in advance Bernd Genser, A-Graz =========================================================================== This list is open to everyone. Occasionally, people lacking respect for other members of the list send messages that are inappropriate or unrelated to the list's discussion topics. Please just delete the offensive email. For information concerning the list, please see the following web page: http://jse.stat.ncsu.edu/ ===========================================================================
