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st: stcurve: why two different graphs?


From   [email protected]
To   "[email protected]" <[email protected]>
Subject   st: stcurve: why two different graphs?
Date   Thu, 11 Oct 2012 10:45:35 +0100 (BST)

Dear Statalisters,


Stata command 

sts graph, hazard 

gives the same graph to me as

    stcox, estimate basehc(bhc)
    stcurve, hazard

I can understand that. Kaplan-Meier hazard graph = stcox null modell.

But, why don´t I get the same result, if I write

    stcox var1 var2 var3 var4, basehc(bhc)
    stcurve, hazard at(var1=0 var2=0 var3=0 var4=0)

?

The graph is similar, but not identical. Is this not the same as above?


Thanks!

Best
Oliver

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