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st: Why stcox is not able to calculate baseline hazard?


From   Apinya Khunathamdee <[email protected]>
To   [email protected]
Subject   st: Why stcox is not able to calculate baseline hazard?
Date   Wed, 30 Apr 2003 05:52:00 -0700 (PDT)

I'm using Stata 7.0. I want to get estimated survival
probabilities to see prediction accuracy of the model
and this needs both baseline hazard and survival.
However, I saw many of baseline hazard reported in the
data are (.) and then caused baseline survival value
to be 1 or 0. 
What might cause this problem?? 
Apinya.

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