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st: Cox Regression

From   "Paradowski, Piotr " <[email protected]>
To   <[email protected]>
Subject   st: Cox Regression
Date   Sat, 23 Sep 2006 19:00:08 -0400

Dear All,
My question to you is why does stcox sometimes reports �Cox regression -- no ties�? I think in theory there should be no ties, but in reality there always are, right?  Is this is a result of colinearity? If it is, why stcox still produce standard errors, hazard ratio, etc.  
Thanks a lot,
Piotr Paradowski 

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