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From |
Steve Samuels <sjsamuels@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: stcurve: why two different graphs? |

Date |
Mon, 15 Oct 2012 21:57:59 -0400 |

Dear Oliver: The Statalist standard is to use full real names. Please do so in the future. We don't know what you saw, but models with and without covariates are very different. Note that the FAQ ask that when you observe a problem, you demonstrate it if possible on an available data set. Here is an extreme counter-example, which works because age = 0 is outside the range of the data. *************CODE BEGINS************* webuse drugtr, clear stcox , estimate basehc(bhc) sts graph,hazard saving(g00.gph, replace) /// title("Smoothed KM") stcurve, hazard saving(g01, replace) /// title("Smoothed Cox Baseline Hazard") stcox age drug stcurve, hazard at(age=0 drug=0) /// title("Cox Age=0 Drug=0")saving(g02, replace) graph combine g00.gph g01.gph g02.gph, /// ycommon xcommon saving(g03, replace) **************CODE ENDS************** Steve On Oct 15, 2012, at 5:12 PM, egolto15@yahoo.de wrote: Dear Statalisters, unfortunately I got no answer yet, but maye now someone has an idea;-): 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 * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**References**:**st: stcurve: why two different graphs?***From:*egolto15@yahoo.de

**st: stcurve: why two different graphs?***From:*egolto15@yahoo.de

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