Hi Eduardo,
With the stcox postestimation command: "predict s0, basesurv"
I can estimate the baseline survivor function; but how can I get the
SE for the baseline survivor function at each time point?
  
-survci- is a Stata macro written by Yulia Marchenko that should make 
available what you are looking for.
I find this command a quite important addition to the  official survival 
commands and
I would wish it to be integrated with the estimate of the confidence 
intervals (and SE) of the covariate-adjusted cumulative hazard.
Best wishes.
Enzo
--- 
Enzo Coviello
Epidemiology Unit ASL Bari
Piazza V. Emanuele, 14 - 70054 GIOVINAZZO (BA)
Italy
tel +39 080 3357883 - fax +39 080 3357867
mobile 347 5016016 
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