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From |
Svend Juul <SJ@SOCI.AU.DK> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
Re: st: How to draw a smoothed hazard curve with graph twoway |

Date |
Sat, 3 May 2008 15:39:37 +0200 |

Marjo Pyy-Martikainen wrote: how can I reproduce a smoothed hazard curve plotted by stcurve after a Cox ph model with graph twoway (my aim is to overlay two smoothed hazard curves based on two different data sets so I think I need to use the graph twoway command at least for one of the hazard curves)?. I cannot figure out how the smoothing done by stcurve can be replicated with graph twoway. Can someone please give me a hint how to modify the code below? stcox <covariates>, basehc(h) stcurve, hazard width(1) graph twoway (line h _t, sort) ============================================================== You can use -stcurve-s -outfile()- option. Illustration: webuse drugtr.dta , clear stcox age if drug==0 , basehc(h0) stcurve , hazard width(1) outfile(drug0.dta, replace) use drug0.dta , clear rename haz1 haz0 save , replace webuse drugtr.dta , clear stcox age if drug==1 , basehc(h1) stcurve , hazard width(1) outfile(drug1.dta, replace) use drug1.dta , clear append using drug0.dta twoway (line haz0 haz1 _t, sort) Hope this helps Svend ________________________________________________________ Svend Juul Institut for Folkesundhed, Afdeling for Epidemiologi (Institute of Public Health, Department of Epidemiology) Vennelyst Boulevard 6 DK-8000 Aarhus C, Denmark Phone, work: +45 8942 6090 Phone, home: +45 8693 7796 Fax: +45 8613 1580 E-mail: sj@soci.au.dk _________________________________________________________ * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re(2): st: How to draw a smoothed hazard curve with graph twoway***From:*"Pyy-Martikainen Marjo" <Marjo.Pyy-Martikainen@stat.fi>

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