Dear STATISTICA friends, I cannot figure out the meaning of the survival rate (pi 1 and pi 2) of the log-rank test. (Power Analysis Software). So my questions are: a) How is the log-rank test defined? What does this test actually compare? (The mean of the underlying distribution or the whole curves? b) What are the survival rates, how are they defined? At a special time point t0 or "in general"? Please help me to answer those questions and send your reply to [EMAIL PROTECTED] my very best wishes Dr. Wolfgang Hitzl =========================================================================== This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===========================================================================
